Service Workshop Manual Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis Edition 06.2005 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Service Department. Technical Information Service List of Workshop Manual Repair GroupsList of Workshop Manual Repair GroupsList of Workshop Manual Repair Groups Repair Group Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 01 - Self-diagnosis, electrical checks permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Technical information should always be available to the foremen and mechanics, because their careful and constant adherence to the instructions is essential to ensure vehicle road-worthiness and safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a matter of course, be observed. All rights reserved. No reproduction without prior agreement from publisher. Copyright © 2010 Audi AG, Ingolstadt 00050806920 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Contents 01 - Self-diagnosis, electrical checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 1.2 2 2.1 3 3.1 3.2 3.3 4 4.1 4.2 4.3 4.4 5 6 7 8 9 10 10.1 10.2 10.3 11 11.1 11.2 11.3 11.4 11.5 12 12.1 12.2 12.3 Self-diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Self-diagnosis function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety functions of gearbox control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical/electronic components and fitting locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removing and installing automatic gearbox control unit J217 . . . . . . . . . . . . . . . . . . . . . . Performing self-diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting vehicle diagnostic, testing and information system VAS 5051 and selecting functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . List of selectable functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interrogating fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interrogating fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fault tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fault tables: Fault code 16987 / P0603 up to fault code 17968 / P1560 . . . . . . . . . . . . . . Fault tables: Fault code 18112 / P1704 up to fault code 18269 / P1861 . . . . . . . . . . . . . . Final control diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Erasing fault memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ending output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Resetting adaption values for gearbox control unit (basic setting) . . . . . . . . . . . . . . . . . . . . Coding control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Measured value block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reading measured value block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of selectable display groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Test table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting adapter V.A.G 1598/20 (test box) to automatic gearbox control unit J217 . . Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not Test table permitted . . . . . unless . . . . authorised . . . . . .by. AUDI . . . AG. . . .AUDI . . .AG . .does . . .not. .guarantee . . . . .or. accept . . . . any . . liability .................. with respect to the correctness of information in this document. Copyright AUDIgearbox AG. Checking wiring between automatic gearbox control unit J217byand .......... Checking multi-function switch F125 with 8-pin connector . . . . . . . . . . . . . . . . . . . . . . . . . . Checking multi-function switch F125 with 10-pin connector . . . . . . . . . . . . . . . . . . . . . . . . CAN bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checking a “two-wire bus system” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Two control units communicating via a “two-wire bus system” . . . . . . . . . . . . . . . . . . . . . . Three or more control units communicating via a “two-wire bus system” . . . . . . . . . . . . . . Contents 1 1 1 2 3 10 11 11 11 13 14 14 15 15 28 42 47 48 49 50 52 52 52 54 66 67 69 80 82 85 89 89 90 91 i Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. ii Contents Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 01 – Self-diagnosis, electrical checks 1 Self-diagnosis 1.1 Self-diagnosis function General notes ♦ The automatic gearbox is controlled electro-hydraulically. ♦ The automatic gearbox control unit -J217- is supplied with in‐ formation from components which influence gear selection. With this information the control unit generates signals to con‐ trol the relevant solenoid valves in the valve body. The sole‐ noid valves direct the fluid pressure produced by the ATF pump to close the appropriate brakes in the gearbox. ♦ The term “self-diagnosis” relates specifically to the electrical and electronic part of the control system. Fault detection by gearbox control unit ♦ The control unit detects faults during vehicle operation and stores them in a fault memory ⇒ “4.2 Fault tables”, page 15 . ♦ Before starting fault-finding procedure, always initiate self-di‐ agnosis and interrogate the fault memory. For interrogation use the vehicle diagnostic, testing and information system VAS 5051- or the vehicle diagnostic and service information system -VAS 5052- . Note The procedure for performing self-diagnosis with the vehicle di‐ agnostic, testing and information system -VAS 5051- is described in this Workshop Manual. ♦ After evaluating the information, the control unit differentiates between sporadic and static (currently present) faults and storesProtected them by in copyright. the memory. Copying for private or commercial purposes, in part or in whole, is not ♦ When awith fault occurs, it is stored as a static (currently present) respect to the correctness of information in this document. Copyright by AUDI AG. fault. If the fault does not occur again for a a predetermined period or distance travelled, the fault will then be reclassified as a sporadic fault. permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability ♦ Sporadically occurring faults are displayed as “sporadic” when interrogating the fault memory. ♦ A fault also becomes "sporadic" when the ignition is switched off and on during interrogation or when the fault memory is not erased after repairs. ♦ When sporadic faults do not occur again they are automati‐ cally erased after 40 gearbox cold start cycles (ATF tempera‐ ture below 71 °C) followed by gearbox warm-up (increase of ATF temperature by at least 21 °C). ♦ Inoperative CAN bus signals will be detected by the control unit. Defective CAN bus wiring, e.g. open circuits, cannot be directly detected. Conclusions as to where the CAN bus wiring is defective are not possible until all control unit fault memories have been interrogated. 1. Self-diagnosis 1 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 1.2 Safety functions of gearbox control unit ♦ If one or more of the system components or sensors fails or has a fault, the automatic gearbox control unit -J217- will switch to a corresponding back-up mode, or emergency run‐ ning program. This enables the automatic gearbox to continue operating without becoming damaged, but will impair the op‐ eration and smoothness of the gearshifts. ♦ When short-term implausibilities occur during a gearshift the automatic gearbox control unit -J217- can shift up into the next gear. This particular fault will be stored only if it occurs three times during a driving cycle (engine start; drive and engine off). Mechanical emergency running mode with active control unit If a critical fault occurs and the automatic gearbox control unit J217- is active, the gear which is currently selected will initially be maintained. As soon as it is safe to do so (i.e. without damaging the gearbox or affecting driving), the automatic gearbox control unit -J217- will switch to the “Mechanical emergency running mode with active control unit”. ♦ Gearbox shifts out of whichever of the forward gears is en‐ gaged and selects hydraulic 4th gear. Torque converter lockup clutch is released. No electrical signals to solenoid valves. ♦ Maximum shift pressure applied to power-transmitting com‐ ponents. ♦ Reverse gear can be engaged. Selector lever lock (in positions “P” and “N”) is active. ♦ All segments of the selector lever position display -Y6- in the dash panel insert light up together -arrow-. Mechanical emergency running mode with inactive control unit If the automatic gearbox control unit -J217- fails (e.g. if the voltage supply fails or the connector becomes detached), the gearbox will immediately switch to “Mechanical emergency running mode with inactive control unit” and continue to operate. ♦ Gearbox shifts out of whichever of the forward gears is en‐ gaged and selects hydraulic 4th gear. Torque converter lockup clutch is released. No electrical signals to solenoid valves. ♦ Maximum shift pressure applied to power-transmitting com‐ ponents. Protected by can copyright. Copying for private or commercial in part or in whole, is not ♦ Reverse gear be engaged. Selector leverpurposes, lock (in positions permitted authorised by AUDI AG. AUDI AG does not guarantee or accept any liability “P” and “N”) unless is inactive. with respect to the correctness of information in this document. Copyright by AUDI AG. ♦ None of the segments of the selector lever position display Y6- in the dash panel insert light up -arrow-. ♦ Automatic gearbox control unit -J217- is not functioning at all, i.e. it is not possible to initiate self-diagnosis. 2 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 2 Electrical/electronic components and fitting locations 1 - Automatic gearbox control unit -J217❑ Checked via self-diag‐ nosis ❑ Fitting location ⇒ page 5 ❑ Removing and installing ⇒ page 10 ❑ Unplugging multi-pin connector on control unit ⇒ page 6 2 - Diagnostic connector ❑ Fitting location up to the end of 1998 ⇒ page 5 ❑ Fitting location from the end of 1998 onwards ⇒ page 5 3 - Selector lever position indi‐ cator -Y6❑ Fitting location: In dash panel insert ⇒ page 7 ❑ If selector lever position indicator does not light up, this indicates that gearbox is in emergen‐ cy running mode with gearbox control unit in‐ active ⇒ page 2 ❑ If all segments of selec‐ tor lever position indica‐ tor light up together, this indicates that gearbox is in mechanical emergen‐ cy running mode with gearbox control unit active ⇒ page 2 4 - Speedometer sender (Hall sender, on gearbox) -G22❑ Fitting location ⇒ page 8 ❑ Checked via self-diagnosis 5 - Internal wiring harness in gearbox with integrated gearbox oil (ATF) temperature sender -G93❑ Fitting location ⇒ page 6 ❑ Gearbox oil (ATF) temperature sender -G93- is checked via self-diagnosis 6 - Valve body Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 6 ❑ Fitting location ⇒ pagepermitted with respect to the correctness of information in this document. Copyright by AUDI AG. ❑ The following valves are attached to the valve body: solenoid valve 1 -N88- , solenoid valve 2 -N89- , solenoid valve 3 -N90- , automatic gearbox pressure regulating valve 1 -N215- , automatic gearbox pressure regulating valve 2 -N216- , automatic gearbox pressure regulating valve 3 -N217- , automatic gearbox pressure regulating valve 4 -N218- and automatic gearbox pressure regulating valve 5 -N233❑ All components are checked via self-diagnosis 7 - Multi-function switch -F125❑ Fitting location ⇒ page 7 ❑ Checked via self-diagnosis 2. Electrical/electronic components and fitting locations 3 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 8 - Gearbox input speed sender -G182❑ Fitting location ⇒ page 8 ❑ Checked via self-diagnosis 9 - Gearbox speed sender -G38- / gearbox output speed sender -G195❑ Component designation depending on vehicle version ❑ Fitting location ⇒ page 8 ❑ Checked via self-diagnosis 10 - Starter inhibitor relay -J207❑ Fitting location up to model year 1998 ⇒ page 8 ❑ Fitting location from model year 1999 onwards ⇒ page 9 11 - tiptronic switch -F189❑ Fitting location ⇒ page 7 ❑ Checked via self-diagnosis 12 - Selector lever lock solenoid -N110❑ Fitting location ⇒ page 7 ❑ Checked via self-diagnosis 13 - Throttle valve potentiometer -G69❑ Only on vehicles with throttle cable: Signal from throttle valve potentiometer is used to detect throttle load ❑ Fitting location: Integrated in throttle valve module -J338❑ Signal is transmitted from Motronic control unit -J220- to automatic gearbox control unit -J217- . If throttle valve potentiometer -G69- is displayed as cause of the fault, interrogate fault memory of engine control unit ❑ Signal from throttle valve potentiometer -G69- can only be checked in measured value block ⇒ page 52 14 - Accelerator position sender -G79- / accelerator position sender 2 -G185❑ Applies to vehicles with electronic throttle only ❑ Accelerator position sender -G79- on vehicles with TDI engine Protected by copyright. Copying for private or commercial in part or inposition whole, is not ❑ Accelerator position sender -G79-purposes, / accelerator sender 2 -G185- on vehicles with petrol engine permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability ❑withFitting ⇒ page 9 in this document. Copyright by AUDI AG. respect tolocation the correctness of information ❑ The signal is transmitted from engine control unit to automatic gearbox control unit -J217- . If accelerator position sender -G79- / accelerator position sender 2 -G185- is displayed as cause of the fault, interrogate fault memory of engine control unit 15 - Kick-down switch -F8❑ Fitting location ⇒ page 9 ❑ Can be checked via reading measured value block ⇒ page 52 and can be checked electrically 16 - Brake light switch -F❑ Fitting location ⇒ page 9 ❑ Vehicles with throttle cable: Signal is directly transmitted to automatic gearbox control unit -J217❑ Vehicles with throttle cable: Can be checked via reading measured value block ⇒ page 52 and can be checked electrically ❑ Vehicles with electronic throttle: Signal is transmitted from engine control unit to automatic gearbox con‐ trol unit -J217- . If brake light switch -F- is displayed as cause of the fault, interrogate fault memory of engine control unit ❑ Vehicles with electronic throttle: Signal from brake light switch -F- can only be checked in measured value block ⇒ page 52 17 - Cruise control system switch -E45❑ Fitting location ⇒ page 9 4 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Diagnostic connector (up to the end of 1998) ♦ Fitting location: Under ashtray in centre console. – Release ashtray from centre console by pressing small lever. – Remove ashtray from centre console and detach cover for di‐ agnostic connector. Diagnostic connector (from the end of 1998 onwards) ♦ Fitting location: Below knee bolster on left side of steering wheel. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Automatic gearbox control unit -J217♦ Fitting location: In electronics box in plenum chamber (rightside) -3-. ♦ Removing and installing ⇒ page 10 . Note -Item 1-, -item 2- and -arrow- can be disregarded. 2. Electrical/electronic components and fitting locations 5 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Unplugging multi-pin connector on automatic gearbox control unit -J217– Switch off ignition and wait about 30 seconds. – Release connector by pressing catch in -direction of arrow-. Valve body ♦ Fitting location: Bolted to underside of gearbox housing and covered by gearbox oil pan. ♦ Attached to valve body: Solenoid valve 1 -N88- , solenoid valve 2 -N89- , solenoid valve 3 -N90- , automatic gearbox pressure regulating valve 1 -N215- , automatic gearbox pres‐ sure regulating valve 2 -N216- , automatic gearbox pressure regulating valve 3 -N217- , automatic gearbox pressure regu‐ lating valve 4 -N218- and automatic gearbox pressure regu‐ lating valve 5 -N233- . ♦ Removing and installing valve body ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 . Note -Arrows- can be disregarded. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Internal wiring harness in gearbox with integrated gearbox oil (ATF) temperature sender -G93♦ Fitting location of internal wiring harness in gearbox: Attached to valve body. ♦ The wiring harness can be removed and installed with gearbox installed and after removing the valve body ⇒ Automatic gear‐ box 01L, four-wheel drive; Rep. Gr. 38 . ♦ Fitting location of gearbox oil (ATF) temperature sender G93- : Integrated into wiring harness. ♦ If gearbox oil (ATF) temperature sender -G93- is defective, the complete wiring harness must be renewed ⇒ Automatic gear‐ box 01L, four-wheel drive; Rep. Gr. 38 . A - Plug-in connections for solenoid valves and pressure regulat‐ ing valves B - Bracket for wiring harness 6 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Selector lever lock solenoid -N110♦ Fitting location: In selector mechanism. ♦ Removing and installing ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 . Note -Item E-, -item Z- and -arrows- can be disregarded. tiptronic switch -F189♦ Fitting location: In selector mechanism. ♦ tiptronic switch -F189- consists of tiptronic recognition switch -1- and shift-up/shift down switch -2-. ♦ Removing and installing tiptronic switch -F189- ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 . Multi-function switch -F125♦ Fitting location: On gearbox (left-side). ♦ Removing and installing ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 . Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Selector lever position indicator -Y6♦ Fitting location: Integrated into dash panel insert -arrow-. ♦ If the selector lever position indicator -Y6- is defective, renew complete dash panel insert ⇒ Electrical system; Rep. Gr. 90 . 2. Electrical/electronic components and fitting locations 7 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Gearbox input speed sender -G182♦ Fitting location: Fitted on reverse side of valve body. ♦ Removing and installing ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 . Gearbox speed sender -G38- / gearbox output speed sender G195♦ Fitting location: The sender -arrow- is fitted on the outer right side of the transfer gearbox housing. ♦ Removing and installing ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 . Speedometer sender (Hall sender, on gearbox) -G22♦ Fitting location: In bearing bracket for flange shaft (left-side). ♦ Removing and installing ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 . Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Starter inhibitor relay -J207- up to model year 1998 ♦ Fitting location: On central electrics unit - front side, in elec‐ tronics box on front passenger side. ♦ Identification ⇒ Current flow diagrams, Electrical fault finding and Fitting locations. 8 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Starter inhibitor relay -J207- from model year 1999 onwards ♦ Fitting location: On auxiliary fuse and relay carrier in electron‐ ics box, in front passenger's footwell. ♦ Identification ⇒ Current flow diagrams, Electrical fault finding and Fitting locations. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright AUDI AG. 2 Accelerator position sender -G79- / accelerator positionbysender -G185- and kick-down switch -F8♦ Fitting location: 1- Accelerator position sender -G79- / accelerator position sender 2 -G185- is bolted to pedal bracket. 2- Kick-down switch -F8- is bolted onto floor under pedals. ♦ Removing and installing ⇒ Rep. Gr. 20 . Brake light switch -F♦ Fitting location: On pedal cluster. ♦ Removing and installing ⇒ Brake system; Rep. Gr. 46 . Cruise control system switch -E45♦ Fitting location: On steering column switch. 2. Electrical/electronic components and fitting locations 9 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 2.1 Removing and installing automatic gear‐ box control unit -J217- Removing – Unscrew bolts -1- a few turns. – Unclip plenum chamber cover -2- (right-side) -arrows- and de‐ tach cover. – Remove cross-head bolts -arrows- (for access to bolt at rear left lever out cover -1- in cowl panel trim). – Detach cover for electronics box in plenum chamber. – Unclip control unit from electronics box -arrows- by copyright. for private or commercial purposes, in part or in whole, is not – Unplug multi-pinProtected connector fromCopying gearbox control unit -3-. permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – To unplug multi-pin connector release connector by pressing catch in -direction of arrow-. In order to do this, switch off the ignition first and wait for at least 30 seconds. – Remove securing bolts and pull gearbox control unit together with bracket out of electronics box. Installing Installation is carried out in reverse sequence; note the following: – Check electronics box for moisture and seal if necessary. – Check wiring. 10 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 3 Performing self-diagnosis 3.1 Safety precautions Observe the following precautions if test and measuring instru‐ ments are required during a test drive: WARNING ♦ Test equipment must always be secured on the rear seat and operated from that position by a second person. ♦ If test and measuring instruments are operated from the front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may suffer serious injuries when the airbag is trig‐ gered. Observe the following precautions to avoid possible injury and/or the destruction of electrical and electronic components: ♦ Switch off ignition before disconnecting and connecting meas‐ uring instruments and testers. ♦ During some of the tests the control unit may detect a fault and store it in the memory. The fault memory should therefore be interrogated and, if necessary, erased after completing all tests and repair work. Caution ♦ On vehicles with telematics: activate service mode of tel‐ ematics control unit before disconnecting battery ⇒ Radio, Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI telephone, navigation system; Rep. Gr. 91 . AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. ♦ Always switch off ignition before disconnecting or con‐ necting the battery to ensure gearbox control unit is not damaged. 3.2 Connecting vehicle diagnostic, testing and information system -VAS 5051- and selecting functions Requirements: • Selector lever in position “P” or “N” and handbrake applied. • Vehicle voltage supply OK. • Fuses OK ⇒ Current flow diagrams, Electrical fault finding and Fitting locations • Earth connections for gearbox OK. – Check earth connections for corrosion and poor contact, repair if necessary ⇒ Current flow diagrams, Electrical fault finding and Fitting locations. – Check battery earth strap and earth strap between battery and gearbox. 3. Performing self-diagnosis 11 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Vehicles up to approx. the end of 1998: – Release ashtray from centre console by pressing small lever. – Remove ashtray from centre console and detach cover for di‐ agnostic connector. – Connect the vehicle diagnostic, testing and information sys‐ tem -VAS 5051- to the diagnostic connector using diagnostic cable -VAS 5051/1- with the ignition switched off. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Vehicles from approx. the end of 1998 onwards: – Connect the vehicle diagnostic, testing and information sys‐ tem -VAS 5051- to the diagnostic connector using diagnostic cable -VAS 5051/1- with the ignition switched off. All models: WARNING Observe safety precautions ⇒ page 11 . Note If a fault message appears on the display ⇒ Operating instruc‐ tions for vehicle diagnostic, testing and information system VAS 5051- . – Switch on ignition. or – Start engine. – Depress brake pedal once on vehicles with throttle cable. Display on -VAS 5051- : – Touch Vehicle self-diagnosis button. 12 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- : Note Select the diagnostic function “00 - Interrogate fault memory complete system” from list -1- to start the automatic test se‐ quence, i.e. fault memories of all vehicle systems with selfdiagnosis capability will be interrogated. – From list -1- select vehicle system “02 - Gearbox electronics”. – Wait until next screen display appears. Display on -VAS 5051- : 2 - Control unit identification of gearbox control unit. Control unit identification of gearbox control unit (example) 02 - Gearbox electronics 4D0927156.. AG5 01L 4.2l5V RoW market: 1009 Coding 1 Workshop code 12345 Vehicle system Part No.; for allocation refer to ⇒ Parts cata‐ logue 5-speed automatic gearbox 01L 4.2 litre engine, 5-valve Rest of the world (unless otherwise stated, ap‐ plicable for all countries, except USA and Can‐ ada) Control unit software version (data level); 3digit display, e.g. D26, on versions installed earlier Control unit coding ⇒ page 50 Workshop code of -VAS 5051- which was used to perform the last coding If readout “Vehicle system not available” appears in display zone -1-: – Check: ♦ Voltage supply to diagnostic connector ⇒ Current flow dia‐ grams, Electrical fault finding and Fitting locations. ♦ Wiring connections from diagnostic connector to automatic Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability gearbox control unit -J217- ⇒ Current flow diagrams, Electrical with respect to the correctness of information in this document. Copyright by AUDI AG. fault finding and Fitting locations. 3.3 List of selectable functions – The following diagnostic functions shown in display -1- are available: Diagnostic functions 02 03 05 06 07 08 Interrogate fault memory Final control diagnosis Erase fault memory End output Code control unit Read measured value block Page ⇒ page 14 ⇒ page 42 ⇒ page 47 ⇒ page 48 ⇒ page 50 ⇒ page 52 All other diagnostic functions displayed cannot be selected or need not be considered. 3. Performing self-diagnosis 13 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 4 Interrogating fault memory 4.1 Interrogating fault memory – Connect vehicle diagnostic, testing and information system VAS 5051- ⇒ page 11 and select vehicle system “02 - Gearbox electronics”. The ignition must be switched on. Display on -VAS 5051- : – From list -1- select diagnostic function “02 - Interrogate fault memory”. Display on -VAS 5051- : -1- Content of fault memory -2- Fault 0 faults detected or X faults detected Fault code Fault location Fault type Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not A - If one or more faults have been detected: permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect the correctness of information – Print out information on screen ortoself-diagnosis log. in this document. Copyright by AUDI AG. – End function “02 - Interrogate fault memory” by touching ← button. Display on -VAS 5051- : – Rectify fault(s) according to fault tables ⇒ page 15 . – Again select diagnostic function “02 - Interrogate fault memo‐ ry” from list -1- and erase fault memory ⇒ page 47 . – From list -1- select diagnostic function “06 - End output” ⇒ page 48 . B - If no fault has been detected: – End function “02 - Interrogate fault memory” by touching ← button. – Select diagnostic function “06 - End output” ⇒ page 48 from the list. 14 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 4.2 Fault tables Note ♦ The following tables list all the possible faults which can be detected by the automatic gearbox control unit -J217- and are displayed on the -VAS 5051- when the fault memory is inter‐ rogated. ♦ The content of the fault memory is retained until the memory is erased; erasing fault memory ⇒ page 47 . ♦ The fault table is sorted according to the 5-digit fault code and the P code in the left-hand column. ♦ Sporadic faults (which occur intermittently) are displayed as “sporadic”. ♦ Components that are indicated as being faulty by the - VAS 5051- should not be renewed immediately. Always start by checking the wiring and connectors to these components according to current flow diagram. Also check the earth con‐ nections according to current flow diagram. This is particularly important for faults displayed as “sporadic”. 4.3 Fault tables: Fault code 16987 / P0603 up to fault code 17968 / P1560 by copyright. Copying for private or commercial purposes, in part or in whole, is not Fault code Protected 16987 / P0603 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Display on -VAS 505116987 / P0603 Control unit defective Possible cause of fault How to rectify fault ♦ Automatic gearbox control unit - – Check gearbox for mechanical J217- defective and hydraulic faults – Check electrical/electronic com‐ ponents and wiring – Check electronics box of gear‐ box control unit for moisture and seal if necessary. – Renew control unit ⇒ page 3 Fault code 16989 / P0605 Display on -VAS 505116989 / P0605 Control unit defective Possible cause of fault How to rectify fault ♦ Automatic gearbox control unit - – Check gearbox for mechanical J217- defective and hydraulic faults – Check electrical/electronic com‐ ponents and wiring – Check electronics box of gear‐ box control unit for moisture and seal if necessary. – Renew control unit ⇒ page 3 Fault code 17084 / P0700 Display on -VAS 5051- Possible cause of fault How to rectify fault 17084 / P0700 Control unit defective 4. Interrogating fault memory 15 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- Possible cause of fault How to rectify fault ♦ Automatic gearbox control unit - – Check gearbox for mechanical J217- defective and hydraulic faults – Check electrical/electronic com‐ ponents and wiring – Check electronics box of gear‐ box control unit for moisture and seal if necessary. – Renew control unit ⇒ page 10 Fault code 17087 / P0703 Display on -VAS 505117087 / P0703 Brake light switch -FElectrical fault in circuit Possible cause of fault ♦ Wiring from component to en‐ gine control unit defective How to rectify fault – Read measured value block 003 ⇒ page 56 – Vehicles up to model year 2000: Perform electrical check, test step No. 8 ⇒ page 73 – Vehicles from model year 2001 onwards: Interrogate fault mem‐ ory of engine control unit ⇒ Rep. Gr. 01 ♦ Open circuit or short to earth or – Read measured value block 125 positive in CAN bus wiring ⇒ page 65 – Check CAN bus wiring ♦ Brake light Protected by copyright. Copying for commercial purposes, in part or in whole, is not ⇒ private pageor89 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability switchwith-Fdefective – Renew brake switch ⇒ by AUDI AG. respect to the correctness of information in thislight document. Copyright Brake system; Rep. Gr. 46 Explanatory notes ♦ Vehicles with throttle cable: The fault is pre-set when the ig‐ nition is switched on and will be erased when the brake pedal is pressed once, provided that brake light switch -F- is OK. Before interrogating the fault memory, press the brake pedal once to erase the pre-set fault. ♦ Vehicles with electronic throttle: The signal from brake light switch -F- is transmitted to automatic gearbox control unit J217- by engine control unit. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . Fault code 17090 / P0706 Display on -VAS 505117090 / P0706 Driving range sensor ⇒ -F125Implausible signal Possible cause of fault How to rectify fault ♦ Selector lever cable incorrectly – Adjust selector lever cable ⇒ adjusted Automatic gearbox 01L, fourwheel drive; Rep. Gr. 37 ♦ Multi-pin connector on multi– Read measured value block 004 function switch not plugged in ⇒ page 58 ♦ Open circuit or short to earth in – Check multi-pin connector for wiring to component contact corrosion and moisture ♦ Open circuit in voltage supply – Check wiring and connector ac‐ cording to current flow diagram 16 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- Possible cause of fault How to rectify fault ♦ Multi-function switch -F125- de‐ – Check fective ⇒ “11.4 Checking multi-function switch F125 with 8-pin connec‐ tor”, page 82 or ⇒ “11.5 Checking multi-function switch F125 with 10-pin connec‐ tor”, page 85 Explanatory notes ♦ The normally used term for the electrical component "driving range sensor" is multi-function switch -F125- . Fault code 17094 / P0710 Display on -VAS 505117094 / P0710 Gearbox oil temperature sender G93Electrical fault in circuit Possible cause of fault How to rectify fault ♦ Open circuit or short to earth or – Read measured value block 004 positive in wiring to component ⇒ page 56 – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Gearbox oil (ATF) temperature – Perform electrical check, test sender -G93- defective step No. 21 ⇒ page 79 Explanatory notes ♦ The gearbox oil (ATF) temperature sender -G93- is integrated Protected copyright. Copying for private wiring or commercial purposes, in part or in whole, is not intobythe internal gearbox harness (on valve body). permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Fault code 17095 / P0711 Display on -VAS 505117095 / P0711 Gearbox oil temperature sender G93Implausible signal Possible cause of fault How to rectify fault ♦ Open circuit or short to earth or – Read measured value block 004 ⇒ page 56 positive in wiring to component – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Gearbox oil (ATF) temperature – Perform electrical check, test sender -G93- defective step No. 21 ⇒ page 79 Explanatory notes ♦ This fault will be detected if ATF temperature does not rise or rises abruptly after the engine is started. ♦ The gearbox oil (ATF) temperature sender -G93- is integrated into the internal gearbox wiring harness (on valve body). 4. Interrogating fault memory 17 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 17096 / P0712 Display on -VAS 505117096 / P0712 Gearbox oil temperature sender G93Signal too small Possible cause of fault How to rectify fault ♦ Open circuit or short to earth or – Read measured value block 004 positive in wiring to component ⇒ page 56 – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Gearbox oil (ATF) temperature – Perform electrical check, test sender -G93- defective step No. 21 ⇒ page 79 Explanatory notes ♦ The gearbox oil (ATF) temperature sender -G93- is integrated into the internal gearbox wiring harness (on valve body). Fault code 17097 / P0713 Display on -VAS 505117097 / P0713 Gearbox oil temperature sender G93Signal too large Possible cause of fault ♦ ATF level not OK How to rectify fault – Check ATF level ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 ♦ Open circuit or short to earth or – Read measured value block 004 positive in wiring to component ⇒ page 56 – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Gearbox oil (ATF) temperature – Perform electrical check, test sender -G93- defective step No. 21 ⇒ page 79 Explanatory notes ♦ The gearbox oil (ATF) temperature sender -G93- is integrated into the internal gearbox wiring harness (on valve body). Fault code 17100 / P0716 Display on -VAS 505117100 / P0716 Gearbox input speed sender G182Implausible signal Possible cause of fault How to rectify fault ♦ Open circuit or short to earth or – Read measured value block 001 ⇒ page 54 positive in wiring to component – Check wiring and connector ac‐ cording to current flow diagram. Also check connector for con‐ Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liabilitytact corrosion or moisture with respect to the correctness of information in this document. Copyright by AUDI AG. ♦ Gearbox input speed sender - – Perform electrical check, test G182- defective step No. 20 ⇒ page 79 ♦ Screening for gearbox input speed sender -G182- defective 18 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- Possible cause of fault How to rectify fault ♦ Gearbox output speed signal in‐ – Rectify fault as described for correct fault code 17105 / P0721 ⇒ page 19 ♦ ATF level not OK – Check ATF level ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 ♦ Brakes slipping – Assess wear by checking ATF for colour and contamination ⇒ Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 – Read measured value block 005 … 007 ⇒ page 56 and per‐ form road test to determine which selector elements are de‐ fective or not activated Explanatory notes ♦ Conditions for fault detection: The selector lever must be pos‐ itively engaged in a drive gear position (“D”, “S” or “4”, “3” or “2”), i.e. not between two gears. The engine speed must be higher than 608 rpm when driving. The gearbox output speed must be higher than 416 rpm when driving. ♦ The fault will be displayed if the conditions for fault detection are met and the gearbox input speed is either 0 rpm or higher than 8000 rpm. Fault code 17105 / P0721 Display on -VAS 505117105 / P0721 Gearbox output speed sender G195Implausible signal Possible cause of fault How to rectify fault ♦ Open circuit or short to earth or – Read measured value block 001 positive in wiring to component ⇒ page 54 – Check wiring and connector ac‐ cording to current flow diagram. Also check connector for con‐ tact corrosion or moisture ♦ Gearbox output speed sender - – Perform electrical check, test G195- defective step No. 19 ⇒ page 78 Screening forprivate gearbox output Protected by♦ copyright. Copying for or commercial purposes, in part or in whole, is not -G195defective permitted unlessspeed authorisedsender by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. ♦ ATF level not OK ♦ Brakes slipping or solenoid valve defective – Check ATF level ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 – Assess wear by checking ATF for colour and contamination ⇒ Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 – Read measured value block 005 … 007 ⇒ page 56 and per‐ form road test to determine which selector elements are de‐ fective or not activated Explanatory notes ♦ In older current flow diagrams the gearbox output speed send‐ er -G195- is referred to as gearbox speed sender -G38- . 4. Interrogating fault memory 19 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 17114 / P0730 Display on -VAS 5051- Possible cause of fault How to rectify fault 17114 / P0730 ♦ ATF level not OK Gear/transmission ratio monitoring Wrong transmission ratio ♦ ATF dirty – Check ATF level ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 – Assess wear by checking ATF for colour and contamination ⇒ Servicing automatic gearbox ♦ Brake slipping/defective or sol‐ 01L, four-wheel drive; Rep. Gr. enoid valve dirty/defective 38 – Check solenoid valves (read measured value block 005 … 007 ⇒ page 59 ) ♦ Gearbox input speed sender - – Rectify fault as described for G182- defective fault code 17100 / P0716 ⇒ page 18 ♦ Gearbox output speed sender - – Rectify fault as described for G195- defective fault code 17105 / P0721 ⇒ page 19 ♦ Incorrect or incorrectly coded – Check control unit identification Protected by copyright. Copying automatic for private or commercial purposes, in part or in-whole,⇒ is not gearbox control unit page 13 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability J217with respect to the correctness of information in this document. Copyright by AUDI AG. Explanatory notes ♦ The gear monitoring system in the gearbox control unit checks the transmission ratios by comparing the engine output speed and gearbox output speed. This fault is displayed if an incor‐ rect transmission ratio (implausibility) is detected. ♦ When testing the stall speed, the gearbox input speed in the torque converter should be almost 0 rpm with the vehicle sta‐ tionary and a gear engaged. If this is not the case, this fault will also be displayed to indicate possible damage to the brakes (read measured value block 001 ⇒ page 54 ). Fault code 17115 / P0731 Display on -VAS 505117115 / P0731 1st gear Wrong transmission ratio Possible cause of fault ♦ This fault may be displayed in addition to fault code 17114 / P0730 How to rectify fault – Rectify fault as described for fault code 17114 / P0730 ♦ Brake of specified gear slipping/ – Assess wear by checking ATF defective or solenoid valve for for colour and contamination ⇒ this gear dirty/defective Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 Explanatory notes ♦ The gear monitoring system in the gearbox control unit checks the transmission ratios by comparing the gearbox input and output speeds for whichever gear is engaged. 20 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 17116 / P0732 Display on -VAS 505117116 / P0732 2nd gear Wrong transmission ratio Possible cause of fault ♦ This fault may be displayed in addition to fault code 17114 / P0730 How to rectify fault – Rectify fault as described for fault code 17114 / P0730 ♦ Brake of specified gear slipping/ – Assess wear by checking ATF defective or solenoid valve for for colour and contamination ⇒ this gear dirty/defective Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 Explanatory notes ♦ The gear monitoring system in the gearbox control unit checks the transmission ratios by comparing the gearbox input and output speeds for whichever gear is engaged. Fault code 17117 / P0733 Display on -VAS 505117117 / P0733 3rd gear Wrong transmission ratio Possible cause of fault ♦ This fault may be displayed in addition to fault code 17114 / P0730 How to rectify fault – Rectify fault as described for fault code 17114 / P0730 ♦ Brake of specified gear slipping/ – Assess wear by checking ATF defective or solenoid valve for for colour and contamination ⇒ this gear dirty/defective Servicing automatic gearbox Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not Rep. Gr. 01L, four-wheel drive; permitted unless authorised by AUDI AG. AUDI AG does not38 guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Explanatory notes ♦ The gear monitoring system in the gearbox control unit checks the transmission ratios by comparing the gearbox input and output speeds for whichever gear is engaged. Fault code 17118 / P0734 Display on -VAS 505117118 / P0734 4th gear Wrong transmission ratio Possible cause of fault ♦ This fault may be displayed in addition to fault code 17114 / P0730 How to rectify fault – Rectify fault as described for fault code 17114 / P0730 ♦ Brake of specified gear slipping/ – Assess wear by checking ATF defective or solenoid valve for for colour and contamination ⇒ this gear dirty/defective Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 – Check solenoid valves (read measured value block 005 … 007 ⇒ page 59 ) Explanatory notes ♦ The gear monitoring system in the gearbox control unit checks the transmission ratios by comparing the gearbox input and output speeds for whichever gear is engaged. 4. Interrogating fault memory 21 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 17119 / P0735 Display on -VAS 505117119 / P0735 5th gear Wrong transmission ratio Possible cause of fault ♦ This fault may be displayed in addition to fault code 17114 / P0730 How to rectify fault – Rectify fault as described for fault code 17114 / P0730 ♦ Brake of specified gear slipping/ – Assess wear by checking ATF defective or solenoid valve for for colour and contamination ⇒ this gear dirty/defective Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability – Check solenoid valves (read with respect to the correctness of information in this document. Copyright by AUDI AG. measured value block 005 … 007 ⇒ page 59 ) Explanatory notes ♦ The gear monitoring system in the gearbox control unit checks the transmission ratios by comparing the gearbox input and output speeds for whichever gear is engaged. Fault code 17125 / P0741 Display on -VAS 505117125 / P0741 Torque converter lock-up clutch No power transmission Possible cause of fault How to rectify fault ♦ ATF level not OK – Check ATF level ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 ♦ ATF dirty – Assess wear by checking ATF for colour and contamination ⇒ Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 ♦ Torque converter defective or – Check torque converter ⇒ Serv‐ incorrect torque converter fitted icing automatic gearbox 01L, four-wheel drive; Rep. Gr. 32 ♦ Mechanical fault in automatic gearbox pressure regulating valve 4 -N218- – Check torque converter identifi‐ cation ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 00 – Read measured value block 007 ⇒ page 61 and with clutch Tc (closed) check permissible tor‐ que converter slip speed ♦ Problems with ATF supply to au‐ tomatic gearbox pressure regu‐ – Renew pressure regulating lating valve 4 -N218valve or valve body ⇒ Automatic gearbox 01L, four-wheel drive; ♦ Torque converter pressure Rep. Gr. 38 valve defective ♦ Valve for torque converter clutch defective 22 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- Possible cause of fault How to rectify fault ♦ Torque converter lock-up clutch – Dismantle complete gearbox defective or worn and clean all parts, renew ATF pipes ⇒ Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 – Dismantle and check all brakes ⇒ Servicing automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 – Renew valve body ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 – Renew torque converter ⇒ Au‐ tomatic gearbox 01L, four-wheel drive; Rep. Gr. 32 Explanatory notes ♦ The ratio of gearbox input speed to engine speed with torque converter lock-up clutch engaged is implausible. Fault code 17135 / P0751 Display on -VAS Possible cause of fault Protected5051by copyright. Copying for private or commercial purposes, in part or in whole, is not How to rectify fault permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 17135 / P0751 ♦ Open circuit ordocument. short toCopyright earthbyinAUDI – AG.Check wiring and connectors with respect to the correctness of information in this Switch valve 1 ⇒ Solenoid valve 1 wiring to component according to current flow dia‐ N88gram. Also check for contact Open circuit / short to earth corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Solenoid valve 1 -N88- defective – Perform final control diagnosis ⇒ page 42 – Read measured value block 005 ⇒ page 59 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 10 ⇒ page 74 Explanatory notes ♦ The check for short to positive is made as soon as the ignition is switched on. When the vehicle is moving all faults are de‐ tected. Fault code 17136 / P0752 Display on -VAS 5051- Possible cause of fault 17136 / P0752 ♦ Short to positive in wiring to Switch valve 1 ⇒ Solenoid valve 1 component N88Short to positive How to rectify fault – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness 4. Interrogating fault memory 23 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- Possible cause of fault How to rectify fault ♦ Solenoid valve 1 -N88- defective – Perform final control diagnosis ⇒ page 42 – Read measured value block 005 ⇒ page 59 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 10 ⇒ page 74 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Explanatory notes Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permittedfor unless authorised by AUDI AG. AUDI AGas does not guarantee accept any liability ♦ The check short to positive is made soon as theorignition with respect to the correctness of information in this document. Copyright by AUDI AG. is switched on. When the vehicle is moving all faults are de‐ tected. Fault code 17137 / P0753 Display on -VAS 5051- Possible cause of fault How to rectify fault 17137 / P0753 ♦ Open circuit or short to earth or – Check wiring and connectors Switch valve 1 ⇒ Solenoid valve 1 positive in wiring to component according to current flow dia‐ N88gram. Also check for contact Electrical fault in circuit corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Solenoid valve 1 -N88- defective – Perform final control diagnosis ⇒ page 42 – Read measured value block 005 ⇒ page 59 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 10 ⇒ page 74 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 17140 / P0756 Display on -VAS 5051- Possible cause of fault How to rectify fault 17140 / P0756 ♦ Open circuit or short to earth in – Check wiring and connectors Switch valve 2 ⇒ Solenoid valve 2 wiring to component according to current flow dia‐ N89gram. Also check for contact Open circuit / short to earth corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Solenoid valve 2 -N89- defective – Perform final control diagnosis ⇒ page 42 – Read measured value block 005 ⇒ page 59 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 11 ⇒ page 74 24 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Explanatory notes ♦ The check for short to positive is made as soon as the ignition is switched on. When the vehicle is moving all faults are de‐ tected. Fault code 17141 / P0757 Display on -VAS 5051- Possible cause of fault How to rectify fault 17141 / P0757 ♦ Short to positive in wiring to Switch valve 2 ⇒ Solenoid valve 2 component N89Short to positive – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Solenoid valve 2 -N89- defective – Perform final control diagnosis ⇒ page 42 – Read measured value block 005 ⇒ page 59 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 11 ⇒ page 74 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Explanatory notes ♦ The check for short to positive is made as soon as the ignition is switched on. When the vehicle is moving all faults are de‐ tected. Fault code 17142 / P0758 Display on -VAS 5051- Possible cause of fault How to rectify fault 17142 / P0758 ♦ Open circuit or short to earth or – Check wiring and connectors Switch valve 2 ⇒ Solenoid valve 2 positive in wiring to component according to current flow dia‐ N89gram. Also check for contact Electrical fault in circuit corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Solenoid valve 2 -N89- defective – Perform final control diagnosis ⇒ page 42 – Read measured value block 005 ⇒ page 59 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not – Perform electrical check, test permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability stepsinNo. 9 ⇒ page 74 and No. with respect to the correctness of information this document. Copyright by AUDI AG. 11 ⇒ page 74 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective 4. Interrogating fault memory 25 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 17145 / P0761 Display on -VAS 5051- Possible cause of fault How to rectify fault 17145 / P0761 ♦ Open circuit or short to earth in – Check wiring and connectors Switch valve 3 ⇒ Solenoid valve 3 wiring to component according to current flow dia‐ N90gram. Also check for contact Open circuit / short to earth corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Solenoid valve 3 -N90- defective – Perform final control diagnosis ⇒ page 42 – Read measured value block 005 ⇒ page 59 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 12 ⇒ page 75 Explanatory notes ♦ The check for short to positive is made as soon as the ignition is switched on. When the vehicle is moving all faults are de‐ tected. Fault code 17146 / P0762 Display on -VAS 5051- Possible cause of fault How to rectify fault 17146 / P0762 ♦ Short to positive in wiring to Switch valve 3 ⇒ Solenoid valve 3 component N90Short to positive – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Solenoid valve 3 -N90- defective – Perform final control diagnosis ⇒ page 42 – Read measured value block 005 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not ⇒ page 59 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 12 ⇒ page 75 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Explanatory notes ♦ The check for short to positive is made as soon as the ignition is switched on. When the vehicle is moving all faults are de‐ tected. 26 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 17147 / P0763 Display on -VAS 5051- Possible cause of fault How to rectify fault 17147 / P0763 ♦ Open circuit or short to earth or – Check wiring and connectors Switch valve 3 ⇒ Solenoid valve 3 positive in wiring to component according to current flow dia‐ N90gram. Also check for contact Electrical fault in circuit corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Solenoid valve 3 -N90- defective – Perform final control diagnosis ⇒ page 42 – Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Read measured value block 005 ⇒ page 59 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 12 ⇒ page 75 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 17195 / P0811 Display on -VAS 505117195 / P0811 Severe clutch slip Possible cause of fault How to rectify fault ♦ ATF level not OK – Check ATF level ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 ♦ ATF dirty – Assess wear by checking ATF for colour and contamination ⇒ Servicing automatic gearbox ♦ Brake slipping/defective or sol‐ 01L, four-wheel drive; Rep. Gr. enoid valve dirty/defective 38 – Check solenoid valves (read measured value block 005 … 007 ⇒ page 59 ) ♦ Gearbox input speed sender - – Rectify fault as described for G182- defective fault code 17100 / P0716 ⇒ page 18 ♦ Gearbox output speed sender - – Rectify fault as described for G195- defective fault code 17105 / P0721 ⇒ page 19 ♦ Incorrect or incorrectly coded – Check control unit identification ⇒ page 13 automatic gearbox control unit J217- Explanatory notes ♦ The gear monitoring system in the gearbox control unit checks the transmission ratios by comparing the engine output speed and gearbox output speed. This fault is displayed if an incor‐ rect transmission ratio (implausibility) is detected. ♦ When testing the stall speed, the gearbox input speed in the torque converter should be almost 0 rpm with the vehicle sta‐ tionary and a gear engaged. If this is not the case, this fault will also be displayed to indicate possible damage to the brakes (read measured value block 001 ⇒ page 54 ). 4. Interrogating fault memory 27 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 17968 / P1560 Display on -VAS 5051- Possible cause of fault 17968 / P1560 ♦ Incorrect signal from engine Maximum engine speed exceeded speed sender -G28- to engine control unit ♦ Engine speed sender -G28- de‐ fective How to rectify fault – Read measured value block 001 ⇒ page 54 – Interrogate fault memory of en‐ gine control unit ⇒ Rep. Gr. 01 – Rectify fault of engine control ♦ Engine speed signal falsified unit as described for fault code due to incorrectly routed electri‐ 16706 / P0322 ⇒ Rep. Gr. 01 cal wiring (e.g. because of ret‐ rofitted telephone) – Check load signal for maximum engine torque ♦ Engine on vehicle has been – Check whether engine has been tuned tuned (unauthorised modifica‐ tions) ♦ Incorrect engine/gearbox com‐ bination – Check transmission ratios ac‐ cording to engine and gearbox codes ♦ Gearbox has changed down – Read measured value block 005 when road speed is too high ⇒ page 59 and perform road (e.g. due to mechanical fault in test to determine which selector valve body) elements are defective or not activated Explanatory notes ♦ The fault will be detected if engine speed is higher than Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 7400 rpm (vehicles with petrol engine) or 5500 rpm (vehicles permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with TDI engine). with respect to the correctness of information in this document. Copyright by AUDI AG. ♦ The signal from engine speed sender -G28- is transmitted to automatic gearbox control unit -J217- by engine control unit. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . 4.4 Fault tables: Fault code 18112 / P1704 up to fault code 18269 / P1861 Fault code 18112 / P1704 Display on -VAS 505118112 / P1704 Kick-down switch -F8Electrical fault in circuit Possible cause of fault How to rectify fault ♦ Wiring from component to en‐ gine control unit defective – For kick-down function and throttle valve value, read meas‐ ured value block 008 ♦ Wiring from component to auto‐ ⇒ page 62 matic gearbox control unit J217- defective – Perform electrical check, test step No. 7 ⇒ page 73 ♦ Kick-down switch -F8- defective ♦ Open circuit or short to earth or – Read measured value block 125 ⇒ page 65 positive in CAN bus wiring – Check CAN bus wiring ⇒ page 89 Explanatory notes ♦ This fault may be erroneously displayed if brake pedal is pressed and accelerator pedal is simultaneously floored as far as kick-down (full throttle). 28 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 18141 / P1733 Display on -VAS 505118141 / P1733 tiptronic switch, down -F189Short to earth Possible cause of fault How to rectify fault ♦ Short to earth in tip-down switch – Read measured value block 011 or in wiring ⇒ page 63 ♦ Short to earth in tiptronic buttons – Perform electrical check, test on multi-function steering wheel step No. 23 ⇒ page 80 or in wiring Explanatory notes ♦ This fault is displayed if actuation of tip-down switch (-) is de‐ tected when selector lever is not in position “D”. Fault code 18147 / P1739 Display on -VAS 505118147 / P1739 tiptronic switch, up -F189Short to earth Possible cause of fault How to rectify fault ♦ Short to earth in tip-up switch or – Read measured value block 011 in wiring ⇒ page 63 ♦ Short to earth in tiptronic buttons – Perform electrical check, test on multi-function steering wheel step No. 23 ⇒ page 80 or in wiring Explanatory notes ♦ This fault is displayed if actuation of tip-up switch (+) is detec‐ ted when selector lever is not in position “D”. Fault code 18152 / P1744 Display on -VAS 5051- Possible cause of fault How to rectify fault 18152 / P1744 ♦ Short to earth in wiring – Check wiring and connectors tiptronic (recognition) switch -F189according to current flow dia‐ Short to earth gram ♦ Short to earth in tiptronic switch – Read measured value block 011 ⇒ page 63 -F189- (recognition) ♦ tiptronic switch -F189- defective – Perform electrical check, test step No. 22 ⇒ page 79 ♦ Automatic gearbox control unit - – Perform electrical check, test J217- defective due to high volt‐ step No. 1 ⇒ page 70 age – If no fault is detected, renew Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not page or3accept any liability control unit permitted unless authorised by AUDI AG. AUDI AG does not ⇒ guarantee Explanatory notes with respect to the correctness of information in this document. Copyright by AUDI AG. ♦ This fault is displayed if the tiptronic switch -F189- (recogni‐ tion) has been activated with selector lever not in position “D”. 4. Interrogating fault memory 29 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 18153 / P1745 Display on -VAS 5051- Possible cause of fault How to rectify fault 18153 / P1745 ♦ Short circuit between positive – Read measured value block 003 Voltage supply for solenoid valves and contacts 52 and 53 on au‐ ⇒ page 56 Short to positive tomatic gearbox control unit J217– Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness – Check voltage supply to auto‐ matic gearbox control unit J217– Perform electrical check, test step No. 9 ⇒ page 74 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 18155 / P1747 Display on -VAS 5051- Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not Possible cause of fault How to rectify fault permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 18155 / P1747 ♦ Open circuit in wiring or short – Read measured value block 003 Voltage supply for solenoid valves circuit between earth and con‐ ⇒ page 56 Open circuit / short to earth tacts 52 and 53 on automatic gearbox control unit -J217– Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness – Check voltage supply to auto‐ matic gearbox control unit J217– Perform electrical check, test step No. 9 ⇒ page 74 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 18156 / P1748 Display on -VAS 505118156 / P1748 Control unit defective Possible cause of fault How to rectify fault ♦ Automatic gearbox control unit - – Check gearbox for mechanical J217- defective and hydraulic faults – Check electrical/electronic com‐ ponents and wiring – Check electronics box of gear‐ box control unit for moisture and seal if necessary. – Renew control unit ⇒ page 3 30 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 18157 / P1749 - Fault description for gearbox control units with all data levels except “D26”, “D29” and “D32”. Check control unit identification ⇒ page 13 Display on -VAS 505118157 / P1749 Automatic gearbox control unit Incorrect coding Possible cause of fault ♦ Incorrect coding detected by gearbox control unit How to rectify fault – Check gearbox control unit iden‐ tification ⇒ page 13 – Read measured value block 013 ⇒ page 64 ♦ Engine control unit incorrectly – Check engine control unit iden‐ coded or incorrect engine con‐ tification ⇒ Rep. Gr. 01 trol unit installed ♦ Engine on vehicle has been tuned – Check whether engine has been tuned (unauthorised modifica‐ tions) Caution The fault codes “18157 / P1748” and “18265 / P1857” were interchanged when producing the software for gearbox control units with data levels “D26”, “D29” and “D32”. Fault description for gearbox control units with data levels “D26”, “D29” and “D32” ⇒ page 31 . Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Fault code 18157 / P1749 - Fault description only for gearbox control units with data levels “D26”, “D29” and “D32”. Check con‐ trol unit identification ⇒ page 13 Display on -VAS 505118157 / P1749 Automatic gearbox control unit Incorrect coding Possible cause of fault How to rectify fault ♦ Fault in “signal for actual engine – Read out fault memory of engine torque” detected by engine con‐ control unit and rectify fault ⇒ trol unit Rep. Gr. 01 18157 / P1749 ♦ Engine control unit incorrectly – Check engine control unit iden‐ Automatic gearbox control unit coded or incorrect engine con‐ tification ⇒ Rep. Gr. 01 Fault message from engine control trol unit installed unit ♦ Gearbox control unit incorrectly – Check gearbox control unit iden‐ coded or incorrect gearbox con‐ tification ⇒ page 13 trol unit installed ♦ Engine on vehicle has been tuned – Check whether engine has been tuned (unauthorised modifica‐ tions) Caution The fault codes 18157 / P1748 and 18265 / P1857 were inter‐ changed when producing the software for gearbox control units with data levels “D26”, “D29” and “D32”. Fault description for gearbox control units with all data levels except “D26”, “D29” and “D32” ⇒ page 31 . 4. Interrogating fault memory 31 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Explanatory notes ♦ The fault is transmitted to automatic gearbox control unit J217- by engine control unit. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . Fault code 18158 / P1750 Display on -VAS 505118158 / P1750 Voltage supply Voltage too low Possible cause of fault How to rectify fault ♦ Fault detected by battery moni‐ – Read measured value block 003 toring system ⇒ page 56 ♦ Battery voltage less than 7 V ♦ Open circuit or short to earth in – Check wiring and connectors wiring according to current flow dia‐ gram – Perform electrical check, test steps No. 1 ⇒ page 70 and No. 6 ⇒ page 73 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is voltage not ♦ Fuse defective – Check supply to auto‐ permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability matic gearbox control unit with respect to the correctness of information in this document. Copyright by AUDI AG. J217♦ Open circuit/short circuit to per‐ – Renew control unit ⇒ page 3 manent positive in gearbox con‐ trol unit Explanatory notes ♦ The battery monitoring system distinguishes between four dif‐ ferent ranges (U = battery voltage): 1. U = less than 7 V: Gearbox switches to emergency running mode ⇒ page 2 2. U = 7…9 Volts: Gear which is currently selected will be maintained for about 2.5 seconds and if U (= battery voltage) still remains within this range after this period of time, gear‐ box switches to emergency running mode ⇒ page 2 3. U = 9…16 Volts: Voltage OK 4. U = higher than 16 V: Gearbox switches to emergency run‐ ning mode ⇒ page 2 ♦ If the voltage supply from the vehicle's electrical system (ter‐ minal 30) fails, certain application values will be lost, i.e. the gearbox control unit must re-learn them the next time the en‐ gine is started. During this “learning process” the gear change quality may not be as smooth as usual 32 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 18159 / P1751 Display on -VAS 505118159 / P1751 Voltage supply Voltage too high Possible cause of fault How to rectify fault ♦ Battery voltage higher than 16 V – Read measured value block 003 ⇒ page 56 ♦ Alternator or voltage regulator defective – Check wiring and connectors according to current flow dia‐ gram – Check voltage supply to control unit – Perform electrical check, test steps No. 1 ⇒ page 70 and No. 6 ⇒ page 73 ♦ Second battery connected in series by mistake (e.g. for jumpstarting) – Check alternator or voltage reg‐ ulator ⇒ Electrical System; Rep. Gr. 27 – Erase fault memory Explanatory notes ♦ The battery monitoring system distinguishes between four dif‐ ferent ranges (U = battery voltage): 1. U = less than 7 V: Gearbox switches to emergency Protectedrunning by copyright. Copying for private or commercial purposes, in part or in whole, is not mode ⇒ page 2 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 2. U = 7…9 Volts: Gear which is currently selected will be maintained for about 2.5 seconds and if U (= battery voltage) still remains within this range after this period of time, gear‐ box switches to emergency running mode ⇒ page 2 3. U = 9…16 Volts: Voltage OK 4. U = higher than 16 V: Gearbox switches to emergency run‐ ning mode ⇒ page 2 with respect to the correctness of information in this document. Copyright by AUDI AG. Fault code 18169 / P1761 Display on -VAS 505118169 / P1761 Selector lever lock ⇒ solenoid N110Short to earth Possible cause of fault How to rectify fault ♦ No voltage supply for selector lever lock solenoid -N110- – Read measured value block 003 ⇒ page 56 ♦ Fuse defective ♦ Short to earth – Check fuses, wiring and con‐ nectors according to current flow diagram ♦ Selector lever lock solenoid N110- defective – Perform final control diagnosis ⇒ page 42 – Perform electrical check, test steps No. 2 ⇒ page 71 and No. 18 ⇒ page 78 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Explanatory notes ♦ The selector lever lock solenoid -N110- cannot be deactivated, i.e. the selector lever cannot be moved out of positions “P” or “D” even though the brake pedal is pressed. 4. Interrogating fault memory 33 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 18170 / P1762 Display on -VAS 505118170 / P1762 Selector lever lock ⇒ solenoid N110Short to positive Possible cause of fault How to rectify fault ♦ Short to positive in wiring to component – Read measured value block 003 ⇒ page 56 ♦ Selector lever lock solenoid N110- defective – Check wiring and connectors according to current flow dia‐ gram – Perform final control diagnosis ⇒ page 42 – Perform electrical check, test steps No. 2 ⇒ page 71 and No. 18 ⇒ page 78 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Explanatory notes ♦ The selector lever lock solenoid -N110- cannot be activated with the selector lever in positions “P” or “N”, i.e. the selector lever can be moved out of positions “P” or “N” without pressing the brake pedal. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Fault code 18171 / P1763 Display on -VAS 505118171 / P1763 Selector lever lock ⇒ solenoid N110Open circuit Possible cause of fault How to rectify fault ♦ Open circuit in wiring to compo‐ – Read measured value block 003 nent ⇒ page 56 ♦ Selector lever lock solenoid N110- defective – Check wiring and connectors according to current flow dia‐ gram – Perform final control diagnosis ⇒ page 42 – Perform electrical check, test steps No. 2 ⇒ page 71 and No. 18 ⇒ page 78 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Explanatory notes ♦ The selector lever lock solenoid -N110- cannot be activated with the selector lever in positions “P” or “N”, i.e. the selector lever can be moved out of positions “P” or “N” without pressing the brake pedal. Fault code 18222 / P1814 Display on -VAS 5051- Possible cause of fault How to rectify fault 18222 / P1814 ♦ Open circuit or short to earth in – Check wiring and connectors Pressure regulating valve 1 -N215wiring to component according to current flow dia‐ Open circuit / short to earth gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness 34 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- Possible cause of fault How to rectify fault ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 1 -N215- defec‐ ⇒ page 42 tive – Read measured value block 006 ⇒ page 60 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 13 ⇒ page 76 Fault code 18223 / P1815 Display on -VAS 5051- Possible permitted cause unless of fault How to rectify faultor accept any liability authorised by AUDI AG. AUDI AG does not guarantee Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not 18223 / P1815 ♦ Short to positive in wiring to Pressure regulating valve 1 -N215component Short to positive – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 1 -N215- defec‐ ⇒ page 42 tive – Read measured value block 006 ⇒ page 60 with respect to the correctness of information in this document. Copyright by AUDI AG. – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 13 ⇒ page 76 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 18227 / P1819 Display on -VAS 5051- Possible cause of fault How to rectify fault 18227 / P1819 ♦ Open circuit or short to earth in – Check wiring and connectors Pressure regulating valve 2 -N216wiring to component according to current flow dia‐ Open circuit / short to earth gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 2 -N216- defec‐ ⇒ page 42 tive – Read measured value block 006 ⇒ page 60 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 14 ⇒ page 76 4. Interrogating fault memory 35 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 18228 / P1820 Display on -VAS 5051- Possible cause of fault How to rectify fault 18228 / P1820 ♦ Short to positive in wiring to Pressure regulating valve 2 -N216component Short to positive – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 2 -N216- defec‐ ⇒ page 42 tive – Read measured value block 006 ⇒ page 60 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 14 ⇒ page 76 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 18232 / P1824 Display on -VAS 5051- Possible cause of fault How to rectify fault 18232 / P1824 ♦ Open circuit or short to earth in – Check wiring and connectors Pressure regulating valve 3 -N217wiring to component according to current flow dia‐ Open circuit / short to earth gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 3 -N217- defec‐ ⇒ page 42 tive – Read measured value block 006 page 60 Protected by copyright. Copying for ⇒ private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness information in this document. Copyright by AUDI AG. – ofPerform electrical check, test steps No. 9 ⇒ page 74 and No. 15 ⇒ page 77 Fault code 18233 / P1825 Display on -VAS 5051- Possible cause of fault How to rectify fault 18233 / P1825 ♦ Short to positive in wiring to Pressure regulating valve 3 -N217component Short to positive – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 3 -N217- defec‐ ⇒ page 42 tive – Read measured value block 006 ⇒ page 60 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 15 ⇒ page 77 36 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- Possible cause of fault How to rectify fault ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 18237 / P1829 Display on -VAS 5051- Possible cause of fault How to rectify fault 18237 / P1829 ♦ Open circuit or short to earth in – Check wiring and connectors Pressure regulating valve 4 -N218wiring to component according to current flow dia‐ Open circuit / short to earth gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 4 -N218- defec‐ ⇒ page 42 tive – Read measured value block 007 ⇒ page 61 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 16 ⇒ page 77 Fault code 18238 / P1830 Display on -VAS 5051- Possible cause of fault How to rectify fault 18238 / P1830 ♦ Short to positive in wiring to Pressure regulating valve 4 -N218component Short to positive – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 4 -N218- defec‐ ⇒ page 42 tive – Read measured value block 007 ⇒ page 61 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 16 ⇒ page 77 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 18242 / P1834 Display on -VAS 5051- Possible cause of fault How to rectify fault Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 18242 / P1834 ♦ Open circuit or short to earth in – Check wiring and connectors with respect to the correctness of information in this document. Copyright by AUDI AG. Pressure regulating valve 5 -N233wiring to component according to current flow dia‐ Open circuit / short to earth gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness 4. Interrogating fault memory 37 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- Possible cause of fault How to rectify fault ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 5 -N233- defec‐ ⇒ page 42 tive – Read measured value block 006 ⇒ page 60 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 17 ⇒ page 78 Fault code 18243 / P1835 Display on -VAS 5051- Possible cause of fault How to rectify fault 18243 / P1835 ♦ Short to positive in wiring to Pressure regulating valve 5 -N233component Short to positive – Check wiring and connectors according to current flow dia‐ gram. Also check for contact corrosion or moisture, especial‐ ly on the 16-pin connector on gearbox between valve body and wiring harness ♦ Automatic gearbox pressure – Perform final control diagnosis regulating valve 5 -N233- defec‐ ⇒ page 42 tive – Read measured value block 006 ⇒ page 60 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 17 ⇒ page 78 ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Fault code 18249 / P1841 Display on -VAS 505118249 / P1841 Engine/gearbox control unit Versions are not compatible Possible cause of fault How to rectify fault ♦ Incorrect or defective automatic – Check control unit identification gearbox control unit -J217⇒ page 13 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not – Read measured value block 013 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability ⇒ page 64by AUDI AG. with respect to the correctness of information in this document. Copyright ♦ Incorrect or defective engine control unit – Check engine control unit iden‐ tification; interrogate fault mem‐ ory and rectify faults ⇒ Rep. Gr. 01 Fault code 18258 / P1850 Display on -VAS 505118258 / P1850 Drive train data bus No message from engine control unit Possible cause of fault ♦ Open circuit or short to earth or – Read measured value block 125 ⇒ page 65 positive in CAN bus wiring ♦ Incorrect or defective engine control unit 38 How to rectify fault Rep. Gr.01 - Self-diagnosis, electrical checks – Check CAN bus wiring ⇒ page 89 – Check engine control unit iden‐ tification; interrogate fault mem‐ ory and rectify faults ⇒ Rep. Gr. 01 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Explanatory notes ♦ Data bus is also referred to as CAN bus. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . Fault code 18259 / P1851 Display on -VAS 5051- Possible cause of fault How to rectify fault 18259 / P1851 ♦ Open circuit or short to earth or – Read measured value block 125 Drive train data bus positive in CAN bus wiring ⇒ page 65 No message from ABS control unit – Check CAN bus wiring ⇒ page 89 ♦ Incorrect or defective ABS with – Check control unit identification; EDL control unit -J104interrogate fault memory and rectify fault ⇒ Running gear, self-diagnosis for ABS, ESP; Rep. Gr. 01 Explanatory notes ♦ Data bus is also referred to as CAN bus. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . Fault code 18262 / P1854 Display on -VAS 505118262 / P1854 Drive train data bus defective Possible cause of fault How to rectify fault ♦ Automatic gearbox control unit - – Renew control unit ⇒ page 3 J217- defective Explanatory notes ♦ Data bus is also referred to as CAN bus. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . Fault code 18263 / P1855 Display on -VAS 505118263 / P1855 Drive train data bus Software version monitoring Possible cause of fault How to rectify fault ♦ Open circuit or short to earth or – Read measured value block 125 positive in CAN bus wiring ⇒ page 65 ♦ Incorrect automatic gearbox control unit -J217- – Check CAN bus wiring ⇒ page 89 – Check control unit identification ⇒ page 13 Explanatory notes ♦ Data bus is also referred to as CAN bus. ♦ The signals between the control units are exchanged via a 89by. copyright. Copying for private or commercial purposes, in part or in whole, is not CAN bus ⇒ page Protected permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 4. Interrogating fault memory 39 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 18264 / P1856 Display on -VAS 5051- Possible cause of fault How to rectify fault 18264 / P1856 ♦ Incorrect signal from throttle – Read measured value block 008 Throttle valve potentiometer -G69valve potentiometer to engine ⇒ page 62 and 009 Fault message from engine control control unit ⇒ page 63 unit ♦ Wiring between throttle valve – Interrogate fault memory of en‐ potentiometer and engine con‐ gine control unit and rectify trol unit defective faults ⇒ Rep. Gr. 01 ♦ Incorrect or defective engine control unit – Check engine control unit iden‐ tification; interrogate fault mem‐ ory and rectify faults ⇒ Rep. Gr. 01 Explanatory notes ♦ The signal from throttle valve potentiometer -G69- is transmit‐ ted to automatic gearbox control unit -J217- by engine control unit. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . Fault code 18265 / P1857 - Fault description for gearbox control units with all data levels except “D26”, “D29” and “D32”. Check control unit identification ⇒ page 13 Display on -VAS 5051- Possible cause of fault How to rectify fault 18265 / P1857 ♦ Fault detected by engine control – Read measured value block 009 Load signal unit in “actual engine torque” ⇒ page 63 Fault message from engine control unit – Interrogate fault memory of en‐ gine control unit and rectify faults ⇒ Rep. Gr. 01 ♦ Incorrect or defective engine – Check engine control unit iden‐ control unit tification; interrogate fault mem‐ ory and rectify faults ⇒ Rep. Gr. ♦ Mechanical fault in engine 01 ♦ Engine on vehicle has been tuned Caution The fault codes 18157 / P1748 and 18265 / P1857 were inter‐ changed when producing the software for gearbox control units with data levels “D26”, “D29” and “D32”. Fault description for gearbox control units with data levels “D26”, “D29” and “D32” ⇒ page 41 . Explanatory notes ♦ The signal for “actual engine torque” is transmitted to auto‐ matic gearbox control unit -J217- by engine control unit. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not unless authorisedthe by AUDI AG. AUDI AG does guarantee or accept any liability ♦ Thepermitted signals between control units arenot exchanged via a to the correctness of information in this document. Copyright by AUDI AG. ⇒ page 89 . CAN with busrespect 40 Rep. Gr.01 - Self-diagnosis, electrical checks – Check whether engine has been tuned (unauthorised modifica‐ tions) Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Fault code 18265 / P1857 - Fault description only for gearbox control units with data levels “D26”, “D29” and “D32”. Check con‐ trol unit identification ⇒ page 13 Display on -VAS 5051- Possible cause of fault 18265 / P1857 ♦ Incorrectly coded or incorrect Load signal engine control unit Fault message from engine control unit How to rectify fault – Check engine control unit iden‐ tification ⇒ Rep. Gr. 01 Caution The fault codes 18157 / P1748 and 18265 / P1857 were inter‐ changed when producing the software for gearbox control units with data levels “D26”, “D29” and “D32”. Fault description for all other data levels ⇒ page 40 . Explanatory notes ♦ The signal for “actual engine torque” is transmitted to auto‐ matic gearbox control unit -J217- by engine control unit. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . Fault code 18269 / P1861 Display on -VAS 5051- Possible cause of fault How to rectify fault 18269 / P1861 ♦ Open circuit in wiring or short – Check wiring and connectors Accelerator position sender -G79between accelerator position according to current flow dia‐ Fault message from engine control sender and engine control unit gram. Also check for contact unit corrosion or moisture ♦ Accelerator position sender de‐ – Interrogate fault memory of en‐ fective gine control unit and rectify faults ⇒ Rep. Gr. 01 Explanatory notes ♦ The signal from accelerator position sender -G79- is transmit‐ ted to automatic gearbox control unit -J217- by engine control unit. ♦ The signals between the control units are exchanged via a CAN bus ⇒ page 89 . Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 4. Interrogating fault memory 41 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 5 Final control diagnosis Note ♦ The final control diagnosis can only be performed with the ig‐ nition switched on, the selector lever in position “P”, the engine not running and the vehicle stationary. ♦ If the engine is started the final control diagnosis will be ter‐ minated. ♦ During the final control diagnosis the operation of solenoid valves -N88- , -N89- and -N90- as well as the selector lever lock solenoid -N110- are tested acoustically. Since the switch‐ ing action (clicking) of the control elements is very quiet, any background noise should be avoided when carrying out this part of the test. ♦ The pressure regulating valves -N215- , -N216- , -N217- , - N218- and -N233- are activated during final control diagnosis. It is not possible to check operation of each component di‐ rectly, however, any electrical faults that may occur during the activation process will be stored in the fault memory. ♦ During the final control diagnosis the control elements are ac‐ tivated until the → button is touched. ♦ When the ignition has been switched on the final control diag‐ nosis can only be performed once. To perform a second final control diagnosis the ignition must be switched off and then on again. Activation sequence 1. Solenoid valve 1 -N88- 2. Solenoid valve 2 -N89- 3. Solenoid valve 3 -N90- 4. Selector lever lock solenoid -N110- 5. Automatic gearbox pressure regulating valve 1 -N215- 6. Automatic gearbox pressure regulating valve 2 -N216- 7. Automatic gearbox pressure regulating valve 3 -N217- 8. Automatic gearbox pressure regulating valve 4 -N218- 9. Automatic gearbox pressure regulating valve 5 -N233- 10. Voltage supply for solenoid valves Procedure – Connect vehicle diagnostic, testing and information system VAS 5051- ⇒ page 11 and select vehicle system “02 - Gearbox electronics”. When doing this the ignition must be switched on. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 42 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- : – From list -1- select diagnostic function “03 - Final control di‐ agnosis”. Display on -VAS 5051- : Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not A - 1st control element in test permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 1 - Switch valve 1 ⇒ Solenoid valve 1 -N88- • The valve is activated in intervals (and should click). Note ♦ If valve is not activated, read “measured value block 005” ⇒ page 59 . ♦ Any electrical faults will be stored in the fault memory, fault tables for solenoid valve 1 -N88- ⇒ page 23 . – Final control diagnosis is advanced to the next control element by touching → button. Display on -VAS 5051- : A - 2nd control element in test 2 - Switch valve 2 ⇒ Solenoid valve 2 -N89• The valve is activated in intervals (and should click). Note ♦ If valve is not activated, read “measured value block 005” ⇒ page 59 . ♦ Any electrical faults will be stored in the fault memory, fault tables for solenoid valve 2 -N89- ⇒ page 24 . – Final control diagnosis is advanced to the next control element by touching → button. 5. Final control diagnosis 43 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- : A - 3rd control element in test 3 - Switch valve 3 ⇒ Solenoid valve 3 -N90• The valve is activated in intervals (and should click). Note ♦ If valve is not activated, read “measured value block 005” ⇒ page 59 . ♦ Any electrical faults will be stored in the fault memory, fault tables for solenoid valve 3 -N90- ⇒ page 26 . – Final control diagnosis is advanced to the next control element by touching → button. Display on -VAS 5051- : A - 4th control element in test 4 - Selector lever lock ⇒ solenoid -N110• The solenoid is activated in intervals (and should click). Note ♦ If solenoid is not activated, read “measured value block 003 ” ⇒ page 56 . ♦ Any electrical faults will be stored in the fault memory, fault tables for selector lever lock solenoid -N110- ⇒ page 33 . – Final control diagnosis is advanced to the next control element by touching → button. Display on -VAS 5051- : A - 5th control element in test 5 - Pressure regulating valve 1 -N215• The valve is activated. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Note Any electrical faults will be stored in the fault memory, fault tables for automatic gearbox pressure regulating valve 1 -N215⇒ page 34 . – Final control diagnosis is advanced to the next control element by touching → button. 44 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- : A - 6th control element in test 6 - Pressure regulating valve 2 -N216• The valve is activated. Note Any electrical faults will be stored in the fault memory, fault tables for automatic gearbox pressure regulating valve 2 -N216⇒ page 35 . – Final control diagnosis is advanced to the next control element by touching → button. Display on -VAS 5051- : A - 7th control element in test 7 - Pressure regulating valve 3 -N217• The valve is activated. Note Any electrical faults will be stored in the fault memory, fault tables for automatic gearbox pressure regulating valve 3 -N217⇒ page 36 . – Final control diagnosis is advanced to the next control element by touching → button. Display on -VAS 5051- : A - 8th control element in test 8 - Pressure regulating valve 4 -N218• The valve is activated. Note Any electrical faults will be stored in the fault memory, fault tables for automatic gearbox pressure regulating valve 4 -N218⇒ page 37 . – Final control diagnosis is advanced to the next control element by touching → button. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 5. Final control diagnosis 45 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- : A - 9th control element in test 9 - Pressure regulating valve 5 -N233• The valve is activated. Note Any electrical faults will be stored in the fault memory, fault tables for automatic gearbox pressure regulating valve 5 -N233⇒ page 37 . – Final control diagnosis is advanced to the next control element by touching → button. Display on -VAS 5051- : A - 10th control element in test 10 - Voltage supply for solenoid valves • In position “P” the solenoid valves are activated in intervals (and should click). Note Ignore control element. – Touch → button. Display on -VAS 5051- : A - Control element test is completed – Exit from function “03 - Final control diagnosis” by touching ← button. Note Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. To perform a second final control diagnosis the ignition must be switched off and then on again and function “03 - Final control diagnosis” selected once again. 46 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 6 Erasing fault memory Note If fault memory cannot be erased, interrogate fault memory once again and rectify any faults. Requirements • Fault memory interrogated ⇒ page 14 . • All faults rectified. After interrogating fault memory: Display on -VAS 5051- : – From list -1- select function “05 - Erase fault memory”. Display on -VAS 5051- : 1 - No display (before erasing memory) or - Fault memory erased Note If the foIlowing message appears in display zone -1-: “Fault mem‐ ory has not yet been interrogated”, the procedure was not per‐ formed properly. The fault memory must first be interrogated before it can be erased. 2 - Note: Is this function to be carried out? Note: Data will be erased. – Touch OK button in display -2-. – Exit function “05 - Erase fault memory” by touchingpermitted ← button. unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not with respect to the correctness of information in this document. Copyright by AUDI AG. – After interrogating and erasing fault memory, road-test vehicle and interrogate fault memory once again. Display on -VAS 5051- : When the fault memory is interrogated the following display should appear: 1 - “0 fault detected” 6. Erasing fault memory 47 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 7 Ending output Display on -VAS 5051- : – From list -1- select function “06 - End output”. Display on -VAS 5051- : – When this display is indicated, switch off ignition and unplug diagnostic connector. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 48 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 8 Resetting adaption values for gear‐ box control unit (basic setting) The adaption values in the gearbox control unit should be reset after repairing valve body (e.g renewing solenoid valves), renew‐ ing valve body, torque converter or gearbox. This enables the gearbox control unit to relearn these adaption values under nor‐ mal operating conditions more quickly when it is put back into operation. The adaption values in the gearbox control unit will be reset: ♦ If multi-pin connector at gearbox control unit is disconnected for at least 15 minutes ⇒ page 10 . ♦ If battery is disconnected for at least 15 minutes ⇒ Electrical system; Rep. Gr. 27 . Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 8. Resetting adaption values for gearbox control unit (basic setting) 49 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 9 Coding control unit The automatic gearbox control unit -J217- can only be coded if the following requirements are met: • Vehicle stationary, ignition switched on, engine not running. • Selector lever in position “P” or “N”. • Accelerator pedal in idling position. – Connect vehicle diagnostic, testing and information system VAS 5051- ⇒ page 11 and select vehicle system “02 - Gearbox electronics”. When doing this the ignition must be switched on. Display on -VAS 5051- : – From list -1- select function “07 - Code control unit”. Display on -VAS 5051- : 1 - Enter code word – Use keypad -2- to enter 5-digit coding according to coding ta‐ ble. Coding table for USA/Canada vehicles Coding A8 (up to model year 2001) S8 (up to model year 2001) A8 (from model year 2002 onwards) S8 (from model year 2002 onwards) 00002 00102 01002 01102 Coding table for rest of the world vehicles Coding A8 00001 00101 1) S8 A8: Tip-up/tip down with selector lever in 01001 position “D”/“S” disabled on multi-function steering wheel 2) S8: Tip-up/tip down with selector lever in 01101 position “D”/“S” disabled on multi-function steering wheel 2) • 1) Some S8 models are coded to “00001” because of a new control unit version. If it is not possible to change coding to “00101”, do not renew control unit. Coding “00001” is correct for these control units. • 2) On vehicles with multi-function steering wheelProtected it is possi‐ by copyright. Copying for private or commercial purposes, in part or in whole, is not ble to shift up or shift down with selector lever in position “D” authorised by AUDI AG. AUDI AG does not guarantee or accept any liability permitted unless or “S” by touching button + or - . This function canwith berespect disa‐to the correctness of information in this document. Copyright by AUDI AG. bled with coding “01001” or on S8 models “01101”. – Confirm entry by touching Q button. 50 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display on -VAS 5051- : 1 - Coding is being performed – Wait until next screen display appears. 1- Vehicle system coding completed 2- Control unit identification with new coding (previous coding in brackets) Note ♦ If the control unit is coded with a coding which is invalid for this copyright. Copying for private or commercial purposes, in part or in whole, is not vehicle model, the following Protected displaybywill appear “Coding permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability XXXXX not accepted”. with respect to the correctness of information in this document. Copyright by AUDI AG. ♦ If an incorrect code number is entered the control unit retains the old coding. ♦ If the control unit is coded under conditions not permitting cod‐ ing (e.g. when driving), the following display will appear: “Function unknown or cannot be performed at the moment”. ♦ Once the coding operation has been completed the fault mem‐ ory in the control unit is automatically erased. – Exit from function “07 - Code control unit” by touching ← but‐ ton. 9. Coding control unit 51 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 10 Measured value block 10.1 Reading measured value block – Connect vehicle diagnostic, testing and information system VAS 5051- ⇒ page 11 and select vehicle system “02 - Gearbox electronics”. When doing this the ignition must be switched on or the engine must be running at idling speed. Display on -VAS 5051- : – From list -1-, select diagnostic function “08 - Read measured value block”. Display on -VAS 5051- : 1 - Enter display group (max. input value = 255). – Use keypad -2- to enter required “display group number” ⇒ page 52 and confirm entry by touching Q button. Display on -VAS 5051- : 1- Display zones 1 ... 4. If a display zone is vacant, the display in this line remains blank. 2- The selected display group is indicated in this field. 3- Touch these buttons to switch to other display groups. 4- Touch these buttons to change to a different function (e.g. from “Read valueforblock” “Basicpurposes, setting” and Protectedmeasured by copyright. Copying private orto commercial in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability vice versa). with respect to the correctness of information in this document. Copyright by AUDI AG. – Exit from diagnostic function “08 - Read measured value block” by touching ← button. 10.2 Overview of selectable display groups Display group Display zone Designation 001 52 1 2 3 4 Engine speed Gearbox input speed Gearbox output speed Gear engaged in gearbox Rep. Gr.01 - Self-diagnosis, electrical checks Further details ⇒ page 54 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display group Display zone Designation 002 1 2 3 4 1 2 3 4 1 2 3 4 Further details Presently used shift program Throttle valve value or accelerator pedal position Gearbox output speed Gear engaged in gearbox 003 Brake light switch -FP/N lock Speed Voltage supply 004 ATF temperature Selector lever position Multi-function switch -F125- position Depending on version: Torque reduction or On-board diagnosis information 005 1 Solenoid valve 1 -N882 Solenoid valve 2 -N893 Solenoid valve 3 -N904 Gear engaged in gearbox 006 1 Specified current of automatic gearbox pressure regulating valve 1 -N2152 Specified current of automatic gearbox pressure regulating valve 2 -N2163 Specified current of automatic gearbox pressure regulating valve 3 -N2174 Specified current of automatic gearbox pressure regulating valve 5 -N233007 1 ATF temperature 2 Specified current of automatic gearbox pressure regulating valve 4 -N2183 Torque converter lock-up clutch 4 Torque converter slip speed 008 1 Kick-down switch 2 Throttle valve value or accelerator pedal position 3 Overrun/acceleration 4 Vacant 009 1 Engine torque (actual) 2 Engine speed 3 Throttle valve value or accelerator pedal position Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG does not guarantee or accept any liability 4 AG. AUDI Gearbox input torque with respect to the correctness of information in this document. Copyright by AUDI AG. 010 1 Torque increase in torque converter 2 Engine speed 3 Gear engaged in gearbox 4 Actual vehicle acceleration rate 011 1 Selector lever position 2 tiptronic switch -F189- (recognition) 3 tiptronic switch -F189- (shift up/shift down) 4 Vacant 012 1 Type of driving, under load 2 Driving dynamics index 3 Motion resistance index 4 Driving style factor ⇒ page 55 ⇒ page 56 ⇒ page 56 ⇒ page 59 ⇒ page 60 ⇒ page 61 ⇒ page 62 ⇒ page 64 ⇒ page 63 ⇒ page 63 ⇒ page 64 10. Measured value block 53 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display group Display zone Designation 1 2 3 4 1 2 3 4 013 1) 125 1) • 1) 10.3 CAN bus calibration torque CAN bus engine code CAN bus gearbox code CAN bus software version code CAN bus for engine control unit CAN bus for ABS with EDL control unit -J104CAN bus for steering angle sender -G85Vacant Further details ⇒ page 64 ⇒ page 65 Display in display groups 013 and 125 according to vehicle version. Test table Display group 001 Display zones 1 … rpm Explanatory notes 0 ... 8200 rpm Engine speed when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 If no value or an implausible value is displayed: – Rectify fault as described for fault code 17968 / P1560 ⇒ page 28 Gearbox input speed when vehicle is driven (from gearbox input speed sender G182- ). A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 – Gearshift must be completed, vehicle is not rolling downhill and not in overrun after accelerating • Gear “R” engaged 0 ... 2000 rpm • Gear “1”, “1m” engaged 0 ... 8200 rpm • Gear “2” engaged 0 ... 8200 rpm • Gear “3” engaged 0 ... 8200 rpm • Gear “4” engaged 0 ... 8200 rpm • Gear “5” engaged 2 If no value or an implausible value is displayed: – Rectify fault as described for fault code 17100 / P0716 ⇒ page 18 0 ... 2000 rpm – Check values in measured value block 007 ⇒ page 61 and perform road test to determine which selector elements are defective or not activated Gearbox output speed when vehicle is driven (from gearbox speed sender -G38- / gearbox output speed sender -G195- ). A second mechanic is required for reading out the values when vehicle is driven ⇒ “3.1 Safety precautions”, page 11 – Gearshift must be completed, vehicle is not rolling downhill and not in overrun after accelerating • Gear “R” engaged 0 ... 2000 rpm • Gear “1”, “1m” engaged • Gear “2” engaged 3 0 ... 4000 rpm 0 ... 5800 rpm 54 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability • Gear “3” engaged with respect to the correctness of information in this document. Copyright by AUDI AG. 0 ... 8200 rpm • Gear “4” engaged 0 ... 8200 rpm • Gear “5” engaged Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zones Explanatory notes If no value or an implausible value is displayed: – Rectify fault as described for fault code 17100 / P0716 ⇒ page 18 1…5 – Check values in measured value block 007 ⇒ page 61 and perform road test to determine which selector elements are defective or not activated Gear engaged in gearbox when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • Selector lever in position “N” R The automatic gearbox control unit -J217- has an automatic gear pre-select dis‐ play function. The display shows the forwards gear that the control unit would activate if the selector lever were to be moved into selector lever position “D” • Selector lever in position “R” 4 “1m” “2” “3” “4” “5” • Selector lever in position “D” “1m” “2” “3” “4” • Selector lever in position “S” or “4” 1) “1m” “2” “3” • Selector lever in position “3” 1) “1m” “2” • Selector lever in position “2” 1) Defective solenoid valves or other faults may prevent a particular gear from being engaged. If the display readout does not appear as described: – Check values for solenoid valves in measured value block 005 ⇒ page 59 , 006 ⇒ page 60 and 007 ⇒ page 61 – Check values for selector lever position in measured value block 004 ⇒ page 56 • 1) Selector mechanism up to model year 2001. Display group 002 Display zones 1 2 Explanatory notes DS Presently used shift program in normal driving conditions – depends on driving style and road conditions (acceleration, accelerator pedal movement, vehicle speed and load). A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • Dynamic shift program is activated – gearshifts are avoided as far as possible WL • AS If warm-up program is not activated after cold start: – Check on-board diagnosis in measured value block 004 ⇒ page 58 • Traction control system activated TT • …% Warm-up program is activated – gearbox shifts up earlier to avoid high engine speeds tiptronic recognition activated If tiptronic recognition is not activated with selector lever in appropriate position: – Rectify fault as described for fault codes 18141 / P1733 ⇒ page 29 , 18147 / P1739 ⇒ page 29 and 18152 / P1744 ⇒ page 29 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not Throttle valve value with vehicle stationary and engine not running – liability the % value permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any rises continuously when pedalofis movedin from idlingCopyright speedbytoAUDI fullAG. throttle with respect to thethe correctness information this document. • Specification - with accelerator pedal in idling position: 0 … 1 % • Specification - with accelerator pedal in full throttle position: 99 … 100 % 10. Measured value block 55 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zones Explanatory notes If the display readout does not appear as described: – Interrogate fault memory of engine control unit and rectify faults ⇒ Rep. Gr. 01 3 4 … rpm … – Check CAN bus wiring ⇒ page 89 Gearbox output speed ⇒ page 54 , measured value block 001, display zone 3 Gear engaged in gearbox ⇒ page 54 , measured value block 001, display zone 4 Display group 003 Display zones 1 Explanatory notes … Brake light switch -F- , vehicle stationary – Press brake pedal • Display should show: “Brakes” – Release brake pedal • Specification: No display readout If the display readout does not appear as described: – Vehicles up to model year 2000: Perform electrical check, test step No. 8 ⇒ page 73 2 … – Vehicles from model year 2001 onwards: Interrogate fault memory of engine control unit and rectify fault ⇒ Rep. Gr. 01 Selector lever lock solenoid -N110- , vehicle stationary – Press brake pedal – Shift selector lever to position “P” or “N” • Specification: “P N inactive” – Release brake pedal • 3 … km/h 4 …V Specification: “P N active” If the display readout does not appear as described: – Perform electrical check, test steps No. 2 ⇒ page 71 and No. 18 ⇒ page 78 Vehicle speed when driving. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 . Speedometer reading may be slightly different from values on display -VAS 5051If no value is displayed: – Check speedometer sender -G22Voltage supply, vehicle stationary • Min. 10.0 V • Max. 16.0 V If the specified value is not displayed: – Perform electrical check, test step No. 1 ⇒ page 70 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability Display zones 1 and 2 in display group 004 with respect to the correctness of information in this document. Copyright by AUDI AG. Display zones 1 56 … °C Explanatory notes ATF temperature with vehicle stationary and engine running (from gearbox oil temperature sender -G93- (ATF)) Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zones Explanatory notes P If an implausible value is displayed (e.g. display readout –50 °C indicates a short to earth, display readout 180 °C indicates a short to positive or open circuit): – Perform electrical check, test step No. 21 ⇒ page 79 Selector lever position (from multi-function switch -F125- ), vehicle stationary • Selector lever in position “P” R • Selector lever in position “R” N • Selector lever in position “N” D • Selector lever in position “D” 4 • Selector lever in position “S” or “4” 1) 3 • Selector lever in position “3” 1) 2 • Selector lever in position “2” 1) Z1 2) • Selector lever between positions “P” and “R” or between positions “R” and “D” Z2 2) • Selector lever between positions “N” and “D” Z3 2) • Selector lever between positions “D” and “S” or “4” 1) • Selector lever between positions “4” and “3” or between positions “3” and “2” 2 Z4 2) 1) Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with to the correctness of information in this document. by AUDI AG. If respect the display readout does not appear asCopyright described: – Check multi-function switch -F125- in display zone 3 – Perform electrical check, test steps No. 4 ⇒ page 71 and No. 5 ⇒ page 72 – If necessary, adjust selector lever cable ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 • 1) • 2) Intermediate positions are displayed according to vehicle version. When the selector lever is moved into one of these intermediate positions, “Z1”, “Z2”, “Z3” or “Z4” will be displayed on -VAS 5051- . However, the display in the dash panel insert should not indicate that a gear has been selected, i.e. the display should only show “PRND432” or “PRNDS”, without any of the gear positions being highlighted. Selector mechanism up to model year 2001. Note The input signals from multi-function switch -F125- can be checked on automatic gearbox control unit -J217- . Display zone 3: (from left to right) L1 L2 L3 L4 Wiring to -J217- , con‐ tact 36 8 37 9 10. Measured value block 57 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zone 3 in display group 004 1 Display 2 3 Explanatory notes 4 L1 1 L2 0 L3 0 L4 0 Multi-function switch -F125- , vehicle stationary • Selector lever in position “P” 0 1 0 0 • Selector lever in position “R” 1 1 1 0 • Selector lever in position “N” 1 0 1 1 • Selector lever in position “D” 0 1 1 1 • Selector lever in position “S” or “4” 1) 0 0 0 1 • Selector lever in position “3” 1) 0 0 1 0 • Selector lever in position “2” 1) 1 1 0 0 • Selector lever between positions “P” and “R” or between positions “R” and “D” 1 0 1 0 • Selector lever between positions “N” and “D” 1 1 1 1 • Selector lever between positions “D” and “S” or “4” 1) 0 0 1 1 • Selector lever between positions “4” and “3” or between positions “3” and “2” 1) If the display readout does not appear as described: – Check multi-pin connector for contact corrosion and moisture – Check wiring and connector according to current flow diagram – Perform electrical check, test steps No. 4 ⇒ page 71 and No. 5 ⇒ page 72 – If necessary, adjust selector lever cable ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 • 1) Selector mechanism up to model year 2001. Display zone 4 in display group 004 “torque reduction” (depending on vehicle version) Display Explanatory notes Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not … Torque reduction (ignition timing retardation) when vehicle is driven; Requirement: permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability engineofspeed signal OK. The torque is only activated during a gearshift. with respect to the correctness information in this document. Copyright by reduction AUDI AG. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 – Accelerate vehicle rapidly from a standstill to make gearbox shift from one gear to the other several times • Specification: “ME” – No gearshift • 58 Specification: No display readout Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display Explanatory notes If the display readout does not appear as described: The torque reduction may be actuated only very briefly depending on driving conditions. This means because the signal to the -VAS 5051- is relatively slow there may be situations where a brief torque reduction is not registered – Interrogate fault memory of engine control unit and rectify faults ⇒ Rep. Gr. 01 – Check CAN bus wiring ⇒ page 89 Display zone 4 in display group 004 “on-board diagnosis” (de‐ pending on vehicle version) 1 Display 2 3 Explanatory notes 4 On-board diagnosis information when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • “0” = Malfunction display switched off X X X X • “1” = Malfunction display switched on • “0” = Trip not completed • “1” = Trip completed • “0” = Gearbox warm-up not completed • “1” = Gearbox warm-up completed • “0” = Engine start not detected • “1” = Engine start detected Display group 005 Display zones Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not Explanatory notes permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 1 0 respect to the correctness of information in this document. Copyright by AUDI AG.is required for Solenoid with valve 1 -N88when vehicle is driven. A second mechanic reading out the values ⇒ “3.1 Safety precautions”, page 11 • Not activated (inactive) with gear “3”, “4” or “5” engaged X • Activated (active) with gear “P”, “R”, “N”, “D”, “2”, “1” or “1m” engaged If the display readout does not appear as described: – Check connectors for contact corrosion or moisture. Especially check the 16pin connector on gearbox between valve body and wiring harness – Check wiring and connector according to current flow diagram 0 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 10 ⇒ page 74 Solenoid valve 2 -N89- when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • Not activated (inactive) with gear “R”, “N”, “1”, “1m” or “5” engaged X • 2 Activated (active) with gear “2”, “3” or “4” engaged 10. Measured value block 59 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zones Explanatory notes If the display readout does not appear as described: – Check connectors for contact corrosion or moisture. Especially check the 16pin connector on gearbox between valve body and wiring harness – Check wiring and connector according to current flow diagram 0 – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 11 ⇒ page 74 Solenoid valve 3 -N90- when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • Not activated (inactive) with gear “R”, “1”, “1m”, “2”, “3”, “4” or “5” engaged X • 3 Activated (active) with gear “P” or “N” engaged If the display readout does not appear as described: – Check connectors for contact corrosion or moisture. Especially check the 16pin connector on gearbox between valve body and wiring harness – Check wiring and connector according to current flow diagram Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability test steps No.to 9 page 74 and No.in 12 with respect the⇒ correctness of information this document. Copyright by AUDI AG. 4 … – Perform electrical check, ⇒ page 75 Gear engaged in gearbox ⇒ page 54 , measured value block 001, display zone 4 Display group 006 Display zones 1 …A Explanatory notes Specified current of automatic gearbox pressure regulating valve 1 -N215- when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 . Various faults including defective pressure regulating valves or brakes may prevent a particular gear from being engaged • Min. 0.0 A • Max. 2.0 A If specified value is not displayed: – Check connectors for contact corrosion or moisture. Especially check the 16pin connector on gearbox between valve body and wiring harness – Check wiring and connector according to current flow diagram 2 …A – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 13 ⇒ page 76 Specified current of automatic gearbox pressure regulating valve 2 -N216- when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 . Various faults including defective pressure regulating valves or brakes may prevent a particular gear from being engaged • Min. 0.0 A • Max. 2.0 A If specified value is not displayed: – Check connectors for contact corrosion or moisture. Especially check the 16pin connector on gearbox between valve body and wiring harness – Check wiring and connector according to current flow diagram – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 14 ⇒ page 76 60 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zones 3 …A Explanatory notes Specified current of automatic gearbox pressure regulating valve 3 -N217- when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 . Various faults including defective pressure regulating valves or brakes may prevent a particular gear from being engaged • Min. 0.0 A • Max. 2.0 A If specified value is not displayed: – Check connectors for contact corrosion or moisture. Especially check the 16pin connector on gearbox between valve body and wiring harness – Check wiring and connector according to current flow diagram 4 …A – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 15 ⇒ page 77 Specified current of automatic gearbox pressure regulating valve 5 -N233- when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 . Various faults including defective pressure regulating valves or brakes may prevent a particular gear from being engaged • Min. 0.0 A • Max. 2.0 A If specified value is not displayed: – Check connectors for contact corrosion or moisture. Especially check the 16pin connector on gearbox between valve body and wiring harness – Check wiring and connector according to current flow diagram – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 17 ⇒ page 78 Display group 007 Display zones 1 2 Explanatory notes … °C …A ATF temperature ⇒ page 56 , measured value block 004, display zone 1 Specified current of automatic gearbox pressure regulating valve 4 -N218- when vehicle is driven. A second mechanic is required for reading out the values Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not ⇒ “3.1 Safety precautions”, page permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability11 . Various faults including defective pressure regulating valves or brakes with respect to the correctness of information in this document. Copyright by AUDI may AG. prevent a particular gear from being engaged • Min. 0.0 A • Max. 2.0 A If specified value is not displayed: – Check connectors for contact corrosion or moisture. Especially check the 16pin connector on gearbox between valve body and wiring harness – Check wiring and connector according to current flow diagram 3 TC open – Perform electrical check, test steps No. 9 ⇒ page 74 and No. 16 ⇒ page 77 Torque converter lock-up clutch when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • TC = Torque converter lock-up clutch open TC ctrl. • TC = Torque converter lock-up clutch in “control phase” TC closed • TC closed = Torque converter lock-up clutch closed – Rectify fault as described for fault code 17125 / P0741 ⇒ page 22 10. Measured value block 61 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zones 4 Explanatory notes Torque converter slip speed when vehicle is driven. A second mechanic is re‐ quired for reading out the values ⇒ “3.1 Safety precautions”, page 11 0 rpm … stall speed • When “TC open” 20 ... 120 rpm • When “TC ctrl.”. The values specified apply when the “control phase” of torque converter lock-up clutch is concluded. Under unfavourable conditions (e.g. accelerating up a hill) this state will not be reached until 20 seconds after the gearshift has been completed. During this control phase the slip speeds can reach up to 350 rpm 0 ... 20 rpm • When “TC closed”: The gearshift must be completed (wait at least 1 second), the torque converter lock-up clutch (TC) must be closed (engaged) and the accelerator pedal value must be constant. If the display readout does not appear as described: – Check ATF level ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 – Rectify fault as described for fault codes 17105 / P0721 ⇒ page 19 and 17125 / Protected by copyright. Copying for private or⇒commercial purposes, in part or in whole, is not P0741 page 22 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – Excessively high torque converter slip speeds may also be an indication of slipping brakes or non-activation of selector elements. Determine which se‐ lector element is defective or not activated ⇒ Automatic gearbox 01L, fourwheel drive; Rep. Gr. 37 – Check comparative plausibility of engine speed, gearbox input speed and gearbox output speed in measured value block 001 ⇒ page 54 Display group 008 Display zones 1 Explanatory notes … Kick-down switch -F8- , vehicle stationary, engine switched off – Press down accelerator pedal past kick-down point • Display should show: “Kick-down” ("100%" should be displayed in display zone “2” at the same time) – Release accelerator pedal from kick-down point • 2 3 …% … Specification: No display readout If the display readout does not appear as described: – Perform electrical check, test step No. 7 ⇒ page 73 Throttle valve value ⇒ page 55 , measured value block 002, display zone 2 Overrun/acceleration signal when vehicle is driven. A second mechanic is re‐ quired for reading out the values ⇒ “3.1 Safety precautions”, page 11 – Allow vehicle to roll downhill or to roll in overrun after accelerating; do not press accelerator pedal • Specification: “Overrun” – Accelerate the vehicle • 62 Specification: No display readout Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display group 009 Display zones 1 Explanatory notes ... Nm Engine torque when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 . When the vehicle is being driven with gear engaged, the displayed engine torque required during gearshift remains at a constant level, since no torque reduction is required The actual engine torque signal is transmitted from engine control unit to gearbox control unit via CAN bus If no value or an implausible value is displayed: – Interrogate fault memory of engine control unit and rectify faults ⇒ Rep. Gr. 01 – Check identification of automatic gearbox control unit -J217- ⇒ page 13 2 3 4 … rpm …% … Nm 1) – Check CAN bus wiring ⇒ page 89 Engine speed ⇒ page 54 , measured value block 001, display zone 1 Throttle valve value ⇒ page 55 , measured value block 002, display zone 2 Gearbox input torque when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • Should match display zone 1 Can be ignored • 1) Display of gearbox input torque depends on vehicle version. Display group 010 Display zones 1 Explanatory notes … 2 3 Torque increase in torque converter when vehicle is driven. A second mechanic is required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • 0 … 3.2 (calculated by gearbox control unit on the basis of the torque converter slip speed) … rpm Engine speed ⇒ page 54 , measured value block 001, display zone 1 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised AUDI AG. AUDI AG does not⇒ guarantee any liability value block 001, display zone … Gear by engaged in gearbox page or54accept , measured with respect to the4correctness of information in this document. Copyright by AUDI AG. Actual vehicle acceleration rate when vehicle is driven. A second mechanic is ... m/s2 1) required for reading out the values ⇒ “3.1 Safety precautions”, page 11 • Min. –10 m/s2 4 • Max. 10 m/s2 Can be ignored • 1) Display of actual vehicle acceleration rate depends on vehicle version. Display group 011 Display zones 1 2 Explanatory notes … Selector lever position ⇒ page 56 , measured value block 004, display zone 2 tiptronic switch -F189- (recognition), vehicle stationary 10. Measured value block 63 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zones Explanatory notes – Move selector lever into tiptronic gate • Specification: “M switch” – Move selector lever out of tiptronic gate • 3 … Specification: No display readout If the display readout does not appear as described: – Perform electrical check, test step No. 22 ⇒ page 79 tiptronic switch -F189- (shift up/shift down), vehicle stationary – Move selector lever into tiptronic gate – Operate shift up function (+) and keep selector lever pressed forwards or press and hold + button on multi-function steering wheel • Specification: “UP button” – Operate shift down (–) function and keep selector lever pressed towards the rear or press and hold – button on multi-function steering wheel • Specification: “DOWN button” If the display readout does not appear as described: – Perform electrical check, test step No. 23 ⇒ page 80 Display group 012 Display zones Explanatory notes 1 E Type of driving, load condition when vehicle is driven. A second mechanic is re‐ quired for reading out the values ⇒ “3.1 Safety precautions”, page 11 • Driving without engine load, e.g. on level road B • 2 0 … 255 3 4 0 … 255 0 … 255 Driving with engine load, e.g. uphill Can be ignored Driving dynamics index when vehicle is driven – calculation based on motion re‐ sistance index and driving style factor. A second mechanic is required for reading Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not Safety precautions”, page 11 out the values ⇒ “3.1 unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability Can be ignored permitted with respect to the correctness of information in this document. Copyright by AUDI AG. Motion resistance index – required for calculation of driving dynamics index Driving style factor – required for calculation of driving dynamics index Display group 013 1) Display zones Explanatory notes 1 ... Nm 2 0 … 63 3 1 64 CAN bus calibration torque Can be ignored CAN bus engine code. After renewing the engine control unit the same display readout should appear as for the old control unit. If this display readout does not appear, an incorrect engine control unit has been installed or the control unit is incorrectly coded If the specified value is not displayed: – Check engine control unit identification; interrogate fault memory of engine control unit and rectify faults ⇒ Rep. Gr. 01 – Check identification of automatic gearbox control unit -J217- ⇒ page 13 CAN bus gearbox code Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Display zones 4 0 … 63 Explanatory notes If the specified value is not displayed: – Check coding of engine control unit ⇒ Rep. Gr. 01 CAN bus software version code. After renewing the engine control unit the same display readout should appear as for the old control unit. If this display readout does not appear, an incorrect engine control unit has been installed or the control unit is incorrectly coded If the specified value is not displayed: – Check engine control unit identification ⇒ Rep. Gr. 01 – Check identification of automatic gearbox control unit -J217- ⇒ page 13 • 1) Measured value block 013 is displayed according to vehicle version. Display group 125 1) Display zones 1 Explanatory notes Engine 1 Communication with Motronic control unit -J220- or diesel direct injection system control unitProtected -J248-by:copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability • Information received from engine control via Copyright CAN bus withis respect to the correctness of information in this unit document. by AUDI AG. Engine 0 • No information is received from engine control unit via CAN bus If “0” is displayed and no fault is entered in the fault memory: – Check engine control unit identification and make sure that correct control unit capable of transmitting data via CAN bus is fitted: For correct version refer to ⇒ Parts catalogue . Or if control unit is defective ABS 1 – Check CAN bus wiring ⇒ page 89 Communication with ABS with EDL control unit -J104- : • Information is received from ABS control unit via CAN bus ABS 0 • 2 No information is received from ABS control unit via CAN bus If “0” is displayed and no fault is entered in the fault memory: – Check ABS control unit identification and make sure that correct control unit capable of transmitting data via CAN bus is fitted. For correct version refer to ⇒ Parts catalogue . Or if control unit is defective – Check CAN bus wiring ⇒ page 89 3 Steering wheel 1 Communication with steering angle sender -G85- 2): • Information is received from steering angle sender via CAN bus Steering wheel 0 • No information is received from steering angle sender via CAN bus If “0” is displayed and no fault is entered in the fault memory: – Check control unit identification for steering angle sender and make sure that correct control unit capable of transmitting data via CAN bus is fitted. For cor‐ rect version refer to ⇒ Parts catalogue . Or if control unit is defective – Check CAN bus wiring ⇒ page 89 • 1) Measured value block 125 is displayed according to vehicle version. • 2) The display for steering angle sender will only appear as of model year 2002. 10. Measured value block 65 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 11 Electrical check Special tools and workshop equipment required ♦ Hand-held multimeter V.A.G 1526 A- , V.A.G 1526 B- or vehicle diagnostic, testing and in‐ formation system VAS 5051- with test leads VAS 5051/7♦ Voltage tester -V.A.G 1527 B♦ Adapter set -V.A.G 1594 Aor -V.A.G 1594 C♦ Adapter -V.A.G 1598/20(test box) The test steps apply to: ♦ Vehicles for which self-diagnosis does not indicate the source of the fault. In this case it is necessary to perform the complete electrical check. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability ♦ Vehicles for which self-diagnosis specific sourcein this document. Copyright by AUDI AG. with indicates respect to the the correctness of information of the fault. Then only perform the test steps recommended in the fault table (selective fault-finding). Requirements • Vehicle voltage supply OK. • Fuses OK ⇒ Current flow diagrams, Electrical fault finding and Fitting locations. • Earth connections have been checked for corrosion and poor contact ⇒ Current flow diagrams, Electrical fault finding and Fitting locations. • Battery earth strap and earth strap between gearbox and body have been checked for corrosion and poor contact. • All electrical consumers have been switched off. 66 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 11.1 Connecting adapter -V.A.G 1598/20(test box) to automatic gearbox control unit -J217- – Unscrew bolts -1- a few turns. – Unclip plenum chamber cover -2- (right-side) -arrows- and de‐ tach cover. – Remove cross-head bolts -arrows- (for access to bolt at rear left lever out cover -1- in cowl panel trim). – Detach cover for electronics box in plenum chamber. – Unclip gearbox control unit -3- from electronics box. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – To unplug multi-pin connector on gearbox control unit, release connector by pressing catch in direction of -arrow-. Before do‐ ing this, switch off the ignition and wait for at least 30 seconds. 11. Electrical check 67 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 – Connect adapter -V.A.G 1598/20- (test box) to automatic gear‐ box control unit -J217- . Caution To avoid damaging the electronic components, always select the appropriate measuring range on the tester before connect‐ ing the test leads and observe the test requirements. – Carry out all the test steps listed in the column headed “Fault rectification if readout does not match specification”. – Only perform the test steps recommended in the fault table (selective fault-finding). – After performing electrical check, fit 88-pin connector onto pins of automatic gearbox control unit -J217- and then lock in place. Note ♦ Use hand-held multimeter -V.A.G 1526 B- with test leads from -V.A.G 1594 C- or vehicle diagnostic, testing and information system -VAS 5051- with test leads -VAS 5051/7- for checking. ♦ The socket designations of the adapter -V.A.G 1598/20- (test box) are identical to the contact designations of the automatic gearbox control unit -J217- in the current flow diagram. ♦ Adhere to correct test procedure to avoid damage to the sys‐ tem. Apart from the connectors listed in the test table, no other bridges may be connected. ♦ The given specifications are valid for an ambient temperature from 10 … 40 °C. ♦ If the measured values differ from the specifications, deter‐ mine fault using current flow diagram. ♦ If the measured values differ only slightly from the specifica‐ tions, clean sockets and connectors of the testers and test leads (use contact spray -G 000 700 04- ) and repeat test. ♦ Before renewing components it is necessary to check the wir‐ ing and connectors first. Particularly if specifications are below 10 Ω, repeat resistance measurement at component. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability 88-pin connector on automatic gearbox control unit -J217- / sock‐ with respect to the correctness of information in this document. Copyright by AUDI AG. ets on adapter -V.A.G 1598/20- (test box) 1 - Automatic gearbox pressure regulating valve 2 -N2162 - Selector lever lock solenoid -N1103 - Vacant 68 Rep. Gr.01 - Self-diagnosis, electrical checks 32 - Solenoid valve 3 -N9033 - Solenoid valve 2 -N8934 - Earth (terminal 31) Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 4 - Automatic gearbox pressure regulating valve 4 -N2185 - Automatic gearbox pressure regulating valve 1 -N2156 - Earth (terminal 31) 7 - Vacant 8 - Multi-function switch -F125- L2 9 - Multi-function switch -F125- L4 Vehicles with throttle cable: Voltage supply for cruise control system 10 - Up to model year 2000: Brake light switch -FFrom model year 2001 onwards: Vacant 11 - Vacant 35 - Vacant 36 - Multi-function switch -F125- L1 37 38 39 40 - Multi-function switch -F125- L3 Vacant Vacant Vacant 41 - Vacant 42 - Gearbox speed sender -G38- / gearbox output speed sender -G195Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted12 unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability - Vacant 43 - Vacant with respect to the correctness of information in this document. Copyright by AUDI AG. 13 - tiptronic recognition 44 - Gearbox input speed sender -G18214 - Gearbox speed sender -G38- / gearbox output 45 - Vacant speed sender -G19515 - Gearbox speed sender -G38- / gearbox output 46 - tiptronic upshift speed sender -G195- (screening) 16 - Gearbox input speed sender -G18247 - tiptronic downshift 17 - Vacant 48 - Vacant 18 - Vacant 49 - Vacant 19 - Vacant 50 - Vacant 20 - Vacant 51 - Automatic gearbox pressure regulating valve 5 -N23321 - Gearbox oil temperature sender -G93- (ATF) 52 - Voltage supply for solenoid valves 22 - Gearbox oil temperature sender -G93- (ATF) 53 - Voltage supply for solenoid valves 23 - Gearbox input speed sender -G182- (screen‐ 54 - Voltage supply (terminal 15) ing) 24 - Vacant 55 - Voltage supply (terminal 15) 25 - Up to model year 1998: Selector lever position 56 - Sockets 56 ... 83 are vacant display -Y6From model year 1999 onwards: Vacant 26 - Voltage supply (terminal 30) 83 27 - Vacant 85 - CAN bus (screening) 28 - Up to model year 1999: Earth for electronics 85 - CAN bus Low (terminal 31) From model year 2000 onwards: Vacant 29 - Automatic gearbox pressure regulating valve 3 86 - CAN bus High -N21730 - Solenoid valve 1 -N8887 - Vacant 31 - Vacant 88 - Diagnosis K wire 11.2 Test table Overview of test steps Component to be checked Test step Voltage supply for automatic gearbox control unit J217Selector lever lock solenoid -N110- – Perform test steps No. 1 ⇒ page 70 and No. 6 ⇒ page 73 – Perform test steps No. 2 ⇒ page 71 and No. 18 ⇒ page 78 11. Electrical check 69 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Component to be checked Test step Voltage supply for cruise control system Multi-function switch -F125- – Perform test step No. 3 ⇒ page 71 – Perform test steps No. 4 ⇒ page 71 and No. 5 ⇒ page 72 Kick-down switch -F8– Perform test step No. 7 ⇒ page 73 Brake light switch -F– Perform test step No. 8 ⇒ page 73 Solenoid valve 1 -N88– Perform test steps No. 9 ⇒ page 74 and No. 10 ⇒ page 74 Solenoid valve 2 -N89– Perform test steps No. 9 ⇒ page 74 and No. 11 ⇒ page 74 Solenoid valve 3 -N90– Perform test steps No. 9 ⇒ page 74 and No. 12 ⇒ page 75 Automatic gearbox pressure regulating valve 1 -N215- – Perform test steps No. 9 ⇒ page 74 and No. 13 ⇒ page 76 Automatic gearbox pressure regulating valve 2 -N216- – Perform test steps No. 9 ⇒ page 74 and No. 14 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not ⇒ page 76 permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information Copyright by AUDI Automatic gearbox pressure regulating valve 3 -N217– Perform test steps No.in9this ⇒ document. page 74 and No. 15AG. ⇒ page 77 Automatic gearbox pressure regulating valve 4 -N218- – Perform test steps No. 9 ⇒ page 74 and No. 16 ⇒ page 77 Automatic gearbox pressure regulating valve 5 -N233- – Perform test steps No. 9 ⇒ page 74 and No. 17 ⇒ page 78 Gearbox output speed sender -G195– Perform test step No. 19 ⇒ page 78 Gearbox input speed sender -G182– Perform test step No. 20 ⇒ page 79 Gearbox oil temperature sender -G93- (ATF) – Perform test step No. 21 ⇒ page 79 tiptronic switch -F189– Perform test steps No. 22 ⇒ page 79 and No. 23 ⇒ page 80 Test step No. 1 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 26 + 6 Voltage supply • Ignition switched off 26 + 28 1) (terminal 30) for 26 + 34 automatic gear‐ – Switch to voltage box control unit measuring range J217- Approx. – Check wiring according to cur‐ battery volt‐ rent flow diagram: ♦ From contact 26 to terminal 30 age ♦ From contacts 6, 28 and 34 to earth 55 + 6 Voltage supply – Switch on ignition 55 + 28 1) (terminal 15) for 55 + 34 automatic gear‐ box control unit J21755 + 54 • 1) 70 Terminal 28 is used up to model year 1999 only. Rep. Gr.01 - Self-diagnosis, electrical checks Approx. – Check wiring according to cur‐ battery volt‐ rent flow diagram: ♦ From contacts 55 or 54 to termi‐ age nal 15 ♦ From contacts 6, 28 and 34 to earth 0V Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Test step No. 2 -V.A.G 1598/20sockets 2+6 Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Selector lever lock solenoid N110- • Ignition switched on – Switch to voltage measuring range Approx. – Check wiring according to cur‐ battery volt‐ rent flow diagram age – Check multi-function switch F125- for short circuit – Check selector lever lock sole‐ noid -N110- for short circuit – Perform test step No. 18 ⇒ page 78 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Test step No. 3 -V.A.G 1598/20sockets 9+6 Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Only vehicles • with throttle ca‐ ble: Voltage sup‐ • ply for cruise con‐ trol system – Ignition switched on Switch to voltage measuring range Selector lever in “D”, “4” or “3” – Selector lever in “P”, “R”, “N” or “2” Approx. – Check wiring according to cur‐ battery volt‐ rent flow diagram age Less than – Perform test step No. 4 ⇒ page 71 5V Test step No. 4 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 36 + 6 Multi-function switch -F125- • Ignition switched on • Switch to voltage measuring range 11. Electrical check 71 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification – Selector lever in “P”, “N”, “D” – Selector lever in “R”, “S” or “4”, “3”, “2” – Selector lever in “R”, “N”, “S” or “4” 8+6 – Selector lever in “P”, “D”, “3”, “2” – Selector lever in “N”, “D”, “S” or “4”, “2” 37 + 6 – Selector lever in “P”,“R”, “3” – Selector lever in “D”, “S” or “4”, “3” 9+6 – Selector lever in “P”, “R”, “N”, “2” Approx. – Check multi-function switch battery volt‐ connector for contact corrosion age Less than – Check multi-function switch ⇒ “11.4 Checking multi-function 1V switch F125 with 8-pin connec‐ Approx. tor”, page 82 or battery volt‐ ⇒ “11.5 Checking multi-function age switch F125 with 10-pin connec‐ tor”, page 85 Less than 1V – Perform test step No. 5 Approx. ⇒ page 72 battery volt‐ age Less than 1V Approx. battery volt‐ age Less than 1V Test step No. 5 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 36 + 55 Multi-function switch -F125- • Ignition switched off • Switch to resistance measuring range 8 + 55 37 + 55 9 + 55 72 – Selector lever in “P”, Less than – Check multi-function switch Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not “N”, “D” 1Ω connector for contact corrosion permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – Selector lever in “P”, ∞Ω – Check multi-function switch “R”, “D”, “S” or “4”, “3”, ⇒ “11.4 Checking multi-function “2” switch F125 with 8-pin connec‐ – Selector lever in “R”, Less than tor”, page 82 or “N”, “S” or “4” 1Ω ⇒ “11.5 Checking multi-function switch F125 with 10-pin connec‐ – Selector lever in “P”, ∞Ω tor”, page 85 “D”, “3”, “2” – Selector lever in “N”, Less than – Perform test step No. 4 “D”, “S” or “4”, “2” 1Ω ⇒ page 71 – Selector lever in ∞Ω “P”,“R”, “3” – Selector lever in “D”, Less than “S” or “4”, “3” 1Ω – Selector lever in “P”, ∞Ω “R”, “N”, “2” Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Test step No. 6 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 6 + earth at Earth connec‐ • Ignition switched off battery tions for automat‐ ic gearbox control – Switch to resistance unit -J217measuring range 28 1) + earth at battery 34 + earth at battery • 1) Terminal 28 is used up to model year 1999 only. Less than – Check wiring according to cur‐ 1Ω rent flow diagram Less than 1Ω Less than 1Ω Test step No. 7 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 18 + 54 Kick-down switch • -F8• Ignition switched on Switch to voltage measuring range Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability – Accelerator pedal not Less than – Check wiring and connectors with respect to the correctness of information in this document. Copyright by AUDI AG. operated 5V according to current flow dia‐ gram – Accelerator pedal Approx. pressed down past battery volt‐ – Vehicles with throttle cable: Ad‐ kick-down point age just throttle cable; renew if nec‐ • Ignition switched off essary ⇒ Rep. Gr. 20 • Switch to resistance measuring range – Accelerator pedal not operated – Accelerator pedal pressed down past kick-down point – Renew kick-down switch ⇒ Rep. Gr. 20 ∞Ω Less than 1.5 Ω Test step No. 8 -V.A.G 1598/20sockets 10 + 6 Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Only vehicles up • to model year 2000: Brake light • switch -F- Ignition switched off Switch to voltage measuring range – Brake pedal not de‐ pressed – Brake pedal de‐ pressed Less than – Check wiring and connectors 1V according to current flow dia‐ gram Approx. battery volt‐ – Renew brake light switch -F- ⇒ age Brake system; Rep. Gr. 46 11. Electrical check 73 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Test step No. 9 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 52 + 53 Voltage supply • Ignition switched off wires to solenoid valves – Switch to resistance measuring range Up to model year 2001 Less than – Check wiring according to cur‐ 1.5 Ω rent flow diagram From model year 2002 ∞Ω – Check wiring from automatic onwards gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Perform test step No. 1 ⇒ page 70 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary Test step No. 10 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 30 + 52 Solenoid valve 1 - • Ignition switched off N88– Switch to resistance measuring range 30 + 34 25 … 35 Ω – Check 16-pin connector to gear‐ box for contact corrosion ∞Ω – Perform test step No. 9 ⇒ page 74 – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary – Renew solenoid valve ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 38 Test step No. 11 -V.A.G 1598/20sockets Items tested 33 + 52 Solenoid valve 2 - • N89- 74 Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Ignition switched off Rep. Gr.01 - Self-diagnosis, electrical checks Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification – Switch to resistance measuring range 33 + 34 25 … 35 Ω – Check 16-pin connector to gear‐ box for contact corrosion ∞Ω – Perform test step No. 9 ⇒ page 74 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary – Renew solenoid valve ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 38 Test step No. 12 -V.A.G 1598/20sockets Items tested 32 + 52 Solenoid valve 3 - • Ignition switched off N90– Switch to resistance measuring range 32 + 34 Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 25 … 35 Ω – Check 16-pin connector to gear‐ box for contact corrosion ∞Ω – Perform test step No. 9 ⇒ page 74 – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary – Renew solenoid valve ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 38 11. Electrical check 75 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Test step No. 13 -V.A.G 1598/20sockets 5 + 52 Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Automatic gear‐ • Ignition switched off box pressure reg‐ ulating valve 1 - – Switch to resistance N215measuring range 5 + 34 6 … 10 Ω – Check 16-pin connector to gear‐ box for contact corrosion ∞Ω – Perform test step No. 9 ⇒ page 74 – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not – AGRenew solenoid valve Auto‐ permitted unless authorised by AUDI AG. AUDI does not guarantee or accept any⇒ liability gearbox 01L, four-wheel with respect to the correctness of information in matic this document. Copyright by AUDI AG. drive; Rep. Gr. 38 Test step No. 14 -V.A.G 1598/20sockets 1 + 53 Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Automatic gear‐ • Ignition switched off box pressure reg‐ ulating valve 2 - – Switch to resistance N216measuring range 1 + 34 6 … 10 Ω – Check 16-pin connector to gear‐ box for contact corrosion ∞Ω – Perform test step No. 9 ⇒ page 74 – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary – Renew solenoid valve ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 38 76 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Test step No. 15 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 29 + 53 Automatic gear‐ • Ignition switched off box pressure reg‐ ulating valve 3 - – Switch to resistance N217measuring range 29 + 34 6 … 10 Ω – Check 16-pin connector to gear‐ box for contact corrosion ∞Ω – Perform test step No. 9 ⇒ page 74 – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary – Renew solenoid valve ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 38 Test step No. 16 -V.A.G 1598/20sockets 4 + 52 4 + 34 Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Automatic gear‐ • Ignition switched off box pressure reg‐ ulating valve 4 - – Switch to resistance N218measuring range 6 … 10 Ω – Check 16-pin connector to gear‐ box for contact corrosion ∞Ω – Perform test step No. 9 ⇒ page 74 – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary – Renew solenoid valve ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 38 11. Electrical check 77 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Test step No. 17 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 51 + 53 Automatic gear‐ • Ignition switched off box pressure reg‐ ulating valve 5 - – Switch to resistance N233measuring range 51 + 34 6 … 10 Ω – Check 16-pin connector to gear‐ box for contact corrosion ∞Ω – Perform test step No. 9 ⇒ page 74 – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary – Renew solenoid valve ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 38 Test step No. 18 -V.A.G 1598/20sockets 2 + 54 Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Selector lever • Ignition switched off lock solenoid - Copying for private or commercial purposes, in part or in whole, is not Protected by copyright. Selector lever at not posi‐ permitted unless authorised•by AUDI AG. AUDI AG does guarantee or accept any liability N110“P” in this document. Copyright by AUDI AG. with respect to the correctnesstion of information – Switch to resistance measuring range 14 … 28 Ω – Check wiring according to cur‐ rent flow diagram – Renew selector lever lock sole‐ noid ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 Test step No. 19 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 14 + 42 Gearbox output speed sender G195- • Ignition switched off – Switch to resistance measuring range 14 + 34 14 + 54 42 + 54 42 + 34 15 + 34 15 + 54 78 Screening for gearbox output speed sender G195- Rep. Gr.01 - Self-diagnosis, electrical checks Min. 0.8 kΩ – Check wiring according to cur‐ rent flow diagram Max. 1.2 kΩ ∞Ω – Renew gearbox output speed sender ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 ∞Ω – Check wiring according to cur‐ rent flow diagram Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Test step No. 20 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 16 + 44 Gearbox input speed sender G182- • Ignition switched off • 88-pin connector dis‐ connected from con‐ trol unit – Switch to resistance Protected by copyright. Copying for private or commercial purposes, in part or in whole, Min. is not 230 Ω range permitted unless authorised by AUDI AG. AUDI AG measuring does not guarantee or accept any liability Max. 300 Ω with respect to the correctness of information in this document. Copyright by AUDI AG. 44 + 34 44 + 54 16 + 54 16 + 34 23 + 34 23 + 54 ∞Ω Screening for gearbox input speed sender G182- ∞Ω – Check wiring according to cur‐ rent flow diagram – Renew gearbox input speed sender ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 – Check wiring according to cur‐ rent flow diagram Test step No. 21 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 21 + 22 Gearbox oil tem‐ • Ignition switched off perature sender – Switch to resistance G93- (ATF) measuring range – Measure ATF temper‐ ature Approx. 20 °C Approx. 60 °C Approx. 120 °C 21 + 34 22 + 34 21 + 54 22 + 54 • 1) Approx. 0.83 kΩ1) Approx. 1.28 kΩ1) Approx. 1.88 kΩ1) ∞Ω – Check wiring from automatic gearbox control unit -J217- to 16-pin connector ⇒ page 80 – Check wiring harness in gear‐ box according to current flow di‐ agram; renew if necessary (the gearbox oil (ATF) temperature sender is integrated in wiring harness) ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 ∞Ω Permissible tolerance: ± 0.1 kΩ. Test step No. 22 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 13 + 54 tiptronic switch F189- (recogni‐ tion) • Ignition switched on • Switch to voltage measuring range 11. Electrical check 79 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 -V.A.G 1598/20sockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification – Selector lever not in tiptronic gate – Selector lever in tip‐ tronic gate Less than – Check wiring according to cur‐ 1V rent flow diagram Approx. battery volt‐ – Renew tiptronic switch ⇒ Auto‐ matic gearbox 01L, four-wheel age drive; Rep. Gr. 37 Test step No. 23 -V.A.G 1598 Asockets Items tested Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification 46 + 54 47 + 54 tiptronic switch F189- (shift up/ shift down) • Ignition switched on • Switch to voltage measuring range 46 + 54 47 + 54 11.3 – Shift up button (+) or Less than – Check wiring according to cur‐ shift down button (–) 1V rent flow diagram not operated – Operate shift up func‐ Approx. – Renew tiptronic switch ⇒ Auto‐ matic gearbox 01L, four-wheel tion (+) and keep se‐ battery volt‐ drive; Rep. Gr. 37 lector lever pressed age forwards or press and hold + button on mul‐ ti-function steering wheel – Operate shift down (–) Approx. function and keep se‐ battery volt‐ lector lever pressed age towards the rear or press and hold – but‐ ton on multi-function steering wheel Checking wiring between automatic gearbox control unitProtected -J217and gearbox by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability Carry out the following test if the final control diagnosis or theof information in this document. Copyright by AUDI AG. with respect to the correctness electrical check indicate a fault between gearbox and automatic gearbox control unit -J217- . – Connect adapter -V.A.G 1598/20- (test box) to automatic gear‐ box control unit -J217- ⇒ page 67 . – On vehicles fitted with auxiliary heater, remove screws -arrows- securing exhaust pipe of auxiliary/ additional heater to noise insulation. 80 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 – Release fasteners -1- and detach noise insulation. – Fold out release tab -4- and disconnect gearbox wiring har‐ ness connector. – If necessary, detach bracket -1- for noise insulation. – Connect multimeter for resistance measurement between contacts on the 16-pin connector and the sockets on adapter -V.A.G 1598/20- (test box), as shown in the following table. • Specification: in each case less than 1.5 Ω. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Connector Contact -V.A.G 1598/20Socket Connector Contact -V.A.G 1598/20Socket 1 2 3 4 5 6 7 8 Contact vacant 5 1 32 16 44 29 30 9 10 11 12 13 14 15 16 33 Contact vacant 4 52 22 21 51 53 11. Electrical check 81 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Note ♦ If readout does not match specification, rectify open circuit in wiring according to current flow diagram and check connector for contact corrosion, moisture and leaks. ♦ If readout obtained in this wiring check matches specification, the wiring harness in the gearbox must be checked. In order to do this, remove valve body ⇒ Automatic gearbox 01L, fourwheel drive; Rep. Gr. 38 . ♦ If no faults are detected in the wiring harness in the gearbox, renew relevant solenoid valves or pressure regulating valves, in order to do this, remove valve body ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 38 . 11.4 Checking multi-function switch -F125with 8-pin connector Note ♦ Read measured value block 004 for multi-function switch be‐ fore performing electrical check. ♦ Make sure that selector lever cable is properly adjusted ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 . – On vehicles fitted with auxiliary heater, remove screws -arrows- securing exhaust pipe of auxiliary/ additional heater to noise insulation. – Release fasteners -arrows- and detach noise insulation. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 82 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 – Unplug connector -2- of multi-function switch -F125- at front left of gearbox. Contact assignment at 8-pin connector of multi-function switch F125- . Test step No. 1 Contacts on Items tested -F1251+2 1+3 1+4 1+5 Multi-function switch -F125- Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not • unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability Ignition switched permitted offwith respect to the correctness of information in this document. Copyright by AUDI AG. • Switch to resistance measuring range – Selector lever in “P”, “N”, “D” – Selector lever in “R”, “4”, “3”, “2” – Selector lever in “R”, “N”, “4” – Selector lever in “P”, “D”, “3”, “2” – Selector lever in “N”, “D”, “4”, “2” – Selector lever in “P”,“R”, “3” – Selector lever in “D”, “4”, “3” – Selector lever in “P”, “R”, “N”, “2” Less than – Check connector at multi-func‐ 1Ω tion switch for contact corrosion, moisture or loose fitting ∞Ω Less than 1Ω ∞Ω – Check selector lever cable ad‐ justment ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 Less than 1Ω – Renew multi-function switch ⇒ Automatic gearbox 01L, fourwheel drive; Rep. Gr. 37 ∞Ω Less than 1Ω ∞Ω 11. Electrical check 83 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Test step No. 2 Contacts on Items tested -F1256+7 P/N signal from multi-function switch -F125- Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification • Ignition switched off • Switch to resistance measuring range – Selector lever in “R”, “D”, “4”, “3”, “2” – Selector lever in “P”, “N” ∞Ω – Check connector at multi-func‐ tion switch for contact corrosion, moisture or loose fitting Less than 1Ω – Check selector lever cable ad‐ justment ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 – Renew multi-function switch ⇒ Automatic gearbox 01L, fourwheel drive; Rep. Gr. 37 Test step No. 3 Contacts on Items tested -F1251+8 Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Reversing light • signal from multifunction switch - • F125- Ignition switched off Switch to resistance measuring range – Selector lever in “P”, “N”, “D”, “4”, “3”, “2” – Selector lever in “R” ∞Ω – Check connector at multi-func‐ tion switch for contact corrosion, moisture or loose fitting Less than 1Ω – Check selector lever cable ad‐ justment ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee 37 or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – Renew multi-function switch ⇒ Automatic gearbox 01L, fourwheel drive; Rep. Gr. 37 Checking voltage supply of multi-function switch – Connect multimeter for voltage measurement between con‐ tacts -1- and -6- of the 8-pin connector. – Switch on ignition. • Specification: approx. battery voltage. If readout does not match specification: – Repair wiring ⇒ Current flow diagrams, Electrical fault finding and Fitting locations. Checking wiring between 8-pin connector for multi-function switch and gearbox control unit – Connect adapter -V.A.G 1598/20- (test box) to automatic gear‐ box control unit -J217- ⇒ page 67 . 84 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 – Connect multimeter for resistance measurement between contacts on the 8-pin connector and the sockets on adapter V.A.G 1598/20- (test box), as shown in the following table. Connector Contact 1 2 3 4 5 6 7 8 Adapter -1598/20(test box) Socket Specification 54 and 55 Less than 1.5 Ω 36 Less than 1.5 Ω 8 Less than 1.5 Ω 37 Less than 1.5 Ω 9 Less than 1.5 Ω 6, 34 and 28 if nec‐ Less than 1.5 Ω essary ⇒ page 84 , Test step No. 2 ⇒ page 84 , Test step No. 3 Note ♦ If readout does not match specification, rectify open circuit in wiring according to current flow diagram and check connector for contact corrosion, moisture and leaks. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability ♦respect to the correctness of information in this document. Copyright by AUDI AG. with If readout obtained in this wiring check matches specification, the multi-function switch -F125- must be renewed ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 37 . 11.5 Checking multi-function switch -F125with 10-pin connector Note ♦ Read “measured value block 004” for multi-function switch be‐ fore performing electrical check. ♦ Make sure that selector lever cable is properly adjusted ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 . – On vehicles fitted with auxiliary heater, remove screws -arrows- securing exhaust pipe of auxiliary/ additional heater to noise insulation. 11. Electrical check 85 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 – Release fasteners -arrows- and detach noise insulation. – Unplug connector -2- of multi-function switch -F125- at front left of gearbox. Contact assignment at 10-pin connector of multi-function switch -F125- . Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. Test step No. 1 Contacts on Items tested -F1251+2 1+3 1+4 Multi-function switch -F125- Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification • Ignition switched off • Switch to resistance measuring range – Selector lever in “P”, “N”, “D” – Selector lever in “R”, “S” or “4”, “3”, “2” – Selector lever in “R”, “N”, “S” or “4” – Selector lever in “P”, “D”, “3”, “2” – Selector lever in “N”, “D”, “S” or “4”, “2” – Selector lever in “P”,“R”, “3” 86 Rep. Gr.01 - Self-diagnosis, electrical checks Less than – Check connector at multi-func‐ 1Ω tion switch for contact corrosion, moisture or loose fitting ∞Ω Less than 1Ω ∞Ω – Check selector lever cable ad‐ justment ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 Less than 1Ω – Renew multi-function switch ⇒ Automatic gearbox 01L, fourwheel drive; Rep. Gr. 37 ∞Ω Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Contacts on Items tested -F1251+5 Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification – Selector lever in “D”, “S” or “4”, “3” – Selector lever in “P”, “R”, “N”, “2” Less than 1Ω ∞Ω Test step No. 2 Contacts on Items tested -F1259 + 10 P/N signal from multi-function switch -F125- Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification • Ignition switched off • Switch to resistance measuring range – Selector lever in “R”, “D”, “S” or “4”, “3”, “2” – Selector lever in “P”, “N” ∞Ω – Check connector at multi-func‐ tion switch for contact corrosion, moisture or loose fitting Less than 1Ω – Check selector lever cable ad‐ justment ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 – Renew multi-function switch ⇒ Automatic gearbox 01L, fourwheel drive; Rep. Gr. 37 Test step No. 3 Contacts on Items tested -F1257+8 Test conditions and addi‐ Specifica‐ Fault rectification if readout does tional steps tion not match specification Reversing light • signal from multifunction switch - • F125- Ignition switched off Switch to resistance measuring range – Selector lever in “P”, ∞Ω – Check connector at multi-func‐ “N”, “D”, “S” or “4”, “3”, tion switch for contact corrosion, “2” moisture or loose fitting – Selector lever in “R” Less than – Check selector lever cable ad‐ 1Ω justment ⇒ Automatic gearbox 01L, four-wheel drive; Rep. Gr. 37 Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. – Renew multi-function switch ⇒ Automatic gearbox 01L, fourwheel drive; Rep. Gr. 37 11. Electrical check 87 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 Checking voltage supply of multi-function switch – Connect multimeter for voltage measurement between con‐ tacts -1- and -10- and between contacts -7- and -10- of the 10pin connector. – Switch on ignition. • Specification: approx. battery voltage each time. If a readout does not match specification: – Repair wiring ⇒ Current flow diagrams, Electrical fault finding and Fitting locations. Checking wiring between 10-pin connector for multi-function switch and gearbox control unit – Connect adapter -V.A.G 1598/20- (test box) to automatic gear‐ box control unit -J217- ⇒ page 67 . – Connect multimeter for resistance measurement between contacts on the 10-pin connector and the sockets on adapter -V.A.G 1598/20- (test box), as shown in the following table. Connector Contact 1 2 3 4 5 6 7 8 9 10 Adapter -1598/20(test box) Socket Specification 54 and 55 Less than 1.5 Ω 36 Less than 1.5 Ω 8 Less than 1.5 Ω 37 Less than 1.5 Ω 9 Less than 1.5 Ω Contact vacant Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not unlessNo. authorised ⇒ page 87 ,permitted Test step 2 by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. ⇒ page 87 , Test step No. 3 Note ♦ If readout does not match specification, rectify open circuit in wiring according to current flow diagram and check connector for contact corrosion, moisture and leaks. ♦ If readout obtained in this wiring check matches specification, the multi-function switch -F125- must be renewed ⇒ Auto‐ matic gearbox 01L, four-wheel drive; Rep. Gr. 37 . 88 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 12 CAN bus Bus: Bus is the term used to describe a data transfer and distribution system. CAN: A Controller Area Network is a bus system operating with two wires. They are called bus wires. The bus wires transmit data signals in serial form (one after the other) to the control units con‐ nected to the system. The following control units communicate via the bus, i.e. data ex‐ change between the various control units is carried out via the CAN data bus. 1- Automatic gearbox control unit -J217- 2- BUS driver 3- Motronic control unit -J220- or diesel direct injection system control unit -J248- 4- BUS driver 5- Matching resistor 6- Drivetrain data bus (CAN bus, two wires twisted together) 7- Matching resistor 8- BUS driver 9- ABS with EDL control unit -J104- 12.1 Checking a “two-wire bus system” Test sequence – Refer to the appropriate current flow diagram to check how many control units communicate via the bus. – Connect vehicle diagnostic, testing and information system VAS 5051- ⇒ page 11 and select function “00 - Automatic test sequence”. The ignition must be switched on. – Before checking the bus wires, make sure that there is no malfunction in any of the control units connected to the bus. A malfunction will cause interference in the communication with other control units. Note In this context "malfunction" does not mean a fault occurring in the bus system itself, but refers to a fault which is impairing the correct functioning of a particular system (e.g. defective sensor). copyright. Copying for private or commercial purposes, in part or in whole, is not As a result of the malfunction, the bus system Protected can nobylonger proc‐ permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability ess the sensor signal for data transmission. Such a malfunction respect to the correctness of information in this document. Copyright by AUDI AG. has an indirect influence on the bus system, aswith communication with the other control units requiring this particular sensor signal is impaired. If a malfunction exists – Repair it first. – Print out the fault list and erase the fault memories of all control units, see “Interrogate fault memory” and “Erase fault memory” for each control unit. 12. CAN bus 89 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 – Select function “06 - End output”. – Rectify malfunctions as described in the fault tables in the rel‐ evant Workshop Manuals. Have all malfunctions been eliminated? – If the communication between the control units is still not work‐ ing properly, check the bus wires. – When tracing faults in the bus wires, distinguish between two Protected by copyright. possible cases:Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI ♦ Two control units are communicating via a “two-wire busAG. sys‐ tem” ⇒ page 90 . ♦ Three or more control units are communicating via a “two-wire bus system” ⇒ page 91 . 12.2 Two control units communicating via a “two-wire bus system” – Switch off ignition. – Detach the multi-pin connectors at both control units. – Check whether there is an open circuit in one of the bus wires ⇒ Current flow diagrams, Electrical fault finding and Fitting lo‐ cations. – Check whether there is a short circuit between the bus wires ⇒ Current flow diagrams, Electrical fault finding and Fitting lo‐ cations. – Check whether there is a short to positive or short to earth in one of the bus wires. If no fault is detected in the bus wires: – As a trial measure, renew whichever control unit is easier (or less expensive) to change. If the control units are still not communicating via the bus: – Renew the second control unit. 90 Rep. Gr.01 - Self-diagnosis, electrical checks Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 12.3 Three or more control units communi‐ cating via a “two-wire bus system” Example 1: From the faults stored in the fault memories you can see that control unit -1- is not connected to control units -2- and -3-. Control unit Faults stored in fault memory -1- ♦ No message from control unit -2♦ No message from control unit -3- -2- ♦ No message from control unit -1- -3- ♦ No message from control unit -1- – Switch off ignition. – Detach the electrical connectors at the control units which are linked by the bus wires and check whether there is an open circuit in one of the bus wires ⇒ Current flow diagrams, Elec‐ trical fault finding and Fitting locations. Example 2: From the faults in the fault memories you can see that control unit -2- is not connected to control units -1- and -3-. Control unit Faults stored in fault memory -1- ♦ No message from control unit -2- -2- ♦ No message from control unit -1♦ No message from control unit -3- -3- ♦ No message from control unit -2- – Switch off ignition. – Detach the electrical connectors at the control units which are linked by the bus wires and check whether there is an open circuit in one of the bus wires ⇒ Current flow diagrams, Elec‐ trical fault finding and Fitting locations. Example 3: From the faults stored in the fault memories, you can see that none of the control units are able to transmit or receive signals. Control unit Faults stored in fault memory Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted by AUDI AUDI AG does not guarantee or accept any liability -1- unless♦authorised Control unitAG.defective with respect to the correctness of information in this document. Copyright by AUDI AG. -2- ♦ Control unit defective -3- ♦ Control unit defective – Switch off ignition. – Detach the electrical connectors at the control units which are linked by the bus wires and check whether there is a short circuit between the bus wires ⇒ Current flow diagrams, Elec‐ trical fault finding and Fitting locations. 12. CAN bus 91 Audi A8 1994 ➤ Automatic gearbox 01L, self-diagnosis - Edition 06.2005 – Check the bus wires for short to positive or earth. – If the cause of the fault “control unit defective” cannot be found in the bus wires, check whether one of the control units is causing the fault. • The connectors at all control units which communicate via the CAN bus are detached. • Ignition switched off. – Connect one of the control units. – Connect vehicle diagnostic, testing and information system VAS 5051- ⇒ page 11 . – Switch on ignition and select the relevant vehicle system. – Interrogate and erase the fault memory of the control unit which has just been connected. – Exit function “05 - Erase fault memory” by touching ← button. – Select function “06 - End output”. – Switch the ignition off and then on again. – Leave the ignition switched on for 10 seconds. Then interrog‐ ate the fault memory of the control unit that has just been connected. If the fault “control unit defective” is displayed: – Renew the control unit that has just been connected. If the fault “control unit defective” is not displayed: – Connect the next control unit and repeat the above procedure. Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability with respect to the correctness of information in this document. Copyright by AUDI AG. 92 Rep. Gr.01 - Self-diagnosis, electrical checks